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(Mostly) Confirmed: New Mersenne Prime Found

A reader writes "Distributed computing seems once more to be succesful. The combined effort of many pc's joining Primenet in search for a new Mersenne prime may have found there fifth result. Among them many belonging to /. readers. There is an unconfirmed claim for Mersenne prime #39 of over 3,500,000 digits, for which a considerable amount of money has been awarded. SETI looks for ET's messages, but found none sofar. Mersenne primes are used to tell ET about us. A previous found Mersenne number was used to show the advance of science on our planet in a message send into outer space. " The Primenet list has confirmed that while they still need to totally test it out (which should be done by the 24th), they believe that the number found today is the 39th positive.

331 comments

  1. just think by Anonymous Coward · · Score: 3, Insightful

    just think if we dedicated all this computering power to a relevant problem...and before you ask, i'm a grad student in math, so don't call me out of touch with mathematics. i just think there are plenty of better problems (including w/in mathematics) than this, of course, why does my opinion matter?

    1. Re:just think by erlando · · Score: 5, Informative
      Some of us do use our otherwise wasted idle-cycles for something useful:

      Cancer drug research
      Gene research
      Protein folding

      All of these distributed projects reach into medical research and are as such a bit more useful than searching for ET or cracking RC-5.

      --
      Remember, there are no stupid questions. But there are a lot of inquisitive idiots.
    2. Re:just think by Anonymous Coward · · Score: 0

      Agreed. And the right way of doing it is to join the Wicked Ol' Atheists.

    3. Re:just think by sporty · · Score: 2

      Well, you use primes in encryption for instance in PKI. Dsa signatures use them too. So it is useful, though not as helpful as say, the cure for cancer.

      --

      -
      ping -f 255.255.255.255 # if only

    4. Re:just think by Anonymous Coward · · Score: 0

      Um, finding a single 3.5 million digit prime has absolutely zero effect on encryption. Unless you want to use it as one of the pair of primes in your key, but I wouldn't recommend it.

    5. Re:just think by Anonymous Coward · · Score: 0

      "Hey, look everyone: I have 1 zillion bit encryption!"

      "Yeah, but the prime numbers for it are published all over the internet..."

      "D'oh!"

    6. Re:just think by Anonymous Coward · · Score: 0

      What's up with these projects closing their source though? What do they have to gain by not allowing people to review and modify the code? Quite the opposite, if the code was open they might find lots of interested geeks porting to something besides Windows and Linux. The cancer project doesn't even have software for Linux. That might be why these projects don't have more people contributing... I have serveral machines with lots of extra CPU time, but I'll be damned if I'm going to toss some closed source, restricted-licence binary on them. Either this is an open, altruistic effort in which the contributors are treated with a little respect, or as far as I'm concerned Stanford and UD buy their own damn CPU time.

    7. Re:just think by csbruce · · Score: 1

      are as such a bit more useful than searching for ET

      I think there's a little more to it than just looking for ET. To me, the effort is a way to demonstrate to the powers that be that there is a broad and general public interest in space exploration. I don't see the other possible uses of my spare CPU cycles contributing to the prevention of the human species from being squished by a stray asteroid.

    8. Re:just think by Anonymous Coward · · Score: 0

      When SETI finally does discover ET, the advanced Alien technology will obsolete all the minor medical advancements made by Protein folding, gene research, etc....

    9. Re:just think by bsletten · · Score: 1

      Parabon is doing a variety of cancer-related research. Some of their clients have had good successes too, like this one and this one. They also have an SDK you can download to develop your own applications to run over the Net. You can register to get a Test Drive account.

    10. Re:just think by pclminion · · Score: 1
      The usual answer to your question is, "If we opened the source, we'd make it a lot easier for people to fake results, and spoil the entire project." I don't see this as an argument for closed-source distributed computing systems, but rather an argument against distributed computing systems themselves. All DC systems will be vulnerable to evil adversaries, no matter how complicated your validation scheme. The entire POINT of DC is to farm out the work -- if each block must be checked for validity (and the only feasible proof of validity is to recompute the answer), then you just end up doing the computation in-house anyway.

      DC would be an incredibly cool idea, if not for the fact that the world is full of assholes who want to throw a monkey wrench into your operation. A small step is made toward making it viable by closing the source, and making it difficult to fake results. It doesn't exclude the possibility, however.

    11. Re:just think by Huge+Pi+Removal · · Score: 1

      The people at Stanford are mad! They produce a Linux version of the Protein folding program, but then go and call it "LinFAHxxx.exe"

      Evidently a bunch of Windows saps :)

      (not a troll, honest)

      --
      - Oliver

      The right to bear arms is only slightly less stupid than the right to arm bears...
    12. Re:just think by joshamania · · Score: 2

      Who cares? It still works...

    13. Re:just think by Anonymous Coward · · Score: 0
      Stop thinking and start designing. You have the Math background. You have access to all kinds of cool development tools to help you create a distributed application. You can get other ideas from other current distributed projects. Create a useful project and you'll definitely get some of my CPU cycles.

      If you don't want to create a project yourself, at least suggest some project ideas. Maybe someone else here will create a project for them.

      Kirk Pearson
      Internet-based Distributed Computing Projects

    14. Re:just think by peter · · Score: 1

      The checking doesn't have to be done in-house. Depending on the nature of the problem, you can send out the same work unit to two or more clients, and compare the results. You can do less duplication by just trying to ferret out the cheaters with a few work units that have already been done.

      The way this works in distributed.net's OGR (Optimal Golomb Ruler) contest is that the number of stubs examined is part of the returned information. The only way to know how many stubs you had to look at was to do all the work for the whole work unit. You can't find the right number to put any faster than you could look for an optimal golomb ruler, so there's no point just generating the number without doing the work correctly. This method of checking is applicable to any other task where you can generate a number that proves you did the work.

      (For the record, I don't like d.net's RC5 contest any more than people who've posted here. It's totally deterministic, and thus a waste of time. AFAIK, the only reason people who know anything do it is for the statistics/ranking web page.)

      --
      #define X(x,y) x##y
      Peter Cordes ; e-mail: X(peter@cordes , .ca)
    15. Re:just think by pclminion · · Score: 1
      Thanks for your comments. How does d.net verify that the number of stubs is correct?

      I also thought of a counterargument to my point; if the problem being solved is NP complete, then it could be possible to VERIFY the answer much faster than it took to PRODUCE the answer. There are other classes of problems as well, where the procedure for verification is much less expensive than the procedure to arrive at the solution in the first place. For example, using the Newton-Raphson method to find roots of a very high-degree (I'm talking 10^6 or greater) polynomial. Once the roots are found, verification of the answer is trivial compared to the effort required to find the roots.

    16. Re:just think by Suidae · · Score: 1

      Great, so we discover the Smilers and some private research lab using their technology will accidentally destroy Houston, leaving a slice of Texas boiling and spitting up black, virulent clouds.

    17. Re:just think by peter · · Score: 1

      d.net issues some duplicate work units, I think. This came up on the mailing list once, so you could probably search the archives if you're interested. I can't remember for sure if they actually doing this, or if someone just suggested it. I think the number was something like 15% of work units. Another thing was that if someone submits a suspiciously large number of work units, they might re-issue some of them (so they will be re-done, probably by other people's computers). If the numbers don't check out, they've caught a cheater, and they ban that person. They probably can also retroactively unsubmit all the work they've done, or at least get it re-checked.

      --
      #define X(x,y) x##y
      Peter Cordes ; e-mail: X(peter@cordes , .ca)
  2. Distributed computing. by Phaze3 · · Score: 1

    I believe distributed computing has a lot of potential. Even though we are still in the early stages of it look at what has come out of it. It just amazes me that I can help find new prime numbers or search for ET from the comfort of my home. ( And without frying my brain thinking about it )

    1. Re:Distributed computing. by czardonic · · Score: 1

      I believe distributed computing has a lot of potential. Even though we are still in the early stages of it look at what has come out of it.

      Indeed. Too bad they don't give out a Nobel Prize for Trivia.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
  3. it's not being payed out... by Misha · · Score: 1

    until the 10 million digit mersenne prime is found, if one exists.

    very interesting... but hey, this should pump a few more clients into SETI@home, rc5, and the rest of the bunch.

    --



    I was thinking of how to intentionally fail my drug test... It would make a good memoir story someday.
    1. Re:it's not being payed out... by VA+Software · · Score: 1

      "if one exists. "

      There are an infinite number of primes therefore one exists with at least 10 million digits.

      --

      ---
      http://slashdot.org/moderation.shtml
    2. Re:it's not being payed out... by VA+Software · · Score: 1


      Of course there may or may not be an infinite number of Mersenne primes. So I sit corrected.

      --

      ---
      http://slashdot.org/moderation.shtml
    3. Re:it's not being payed out... by Bobo+the+Space+Chimp · · Score: 1

      > There are an infinite number of primes therefore
      > one exists with at least 10 million digits.

      Therefore an infinite number with at least 10 million digits exist...

      Are Mersenne primes proven infinite, too?

      --
      I am for the complete Trantorization of Earth.
    4. Re:it's not being payed out... by Anonymous Coward · · Score: 0

      The prime does not need to be Mersenne Prime. EFF rewards the first PRIME with 100.000$, and these large primes do exist.

  4. Grammar Goldmine by cpeterso · · Score: 0, Troll

    "Distributed computing seems once more to be succesful. The combined effort of many pc's joining Primenet in search for a new Mersenne prime may have found there fifth result. Among them many belonging to /. readers (This is not a complete sentence; there is no verb!). There is an unconfirmed claim for Mersenne prime #39 of over 3,500,000 digits, for which a considerable amount of money has been awarded. SETI looks for ET's messages, but found none sofar. Mersenne primes are used to tell ET about us. A previous found Mersenne number was used to show the advance of science on our planet in a message send into outer space. "

    1. Re:Grammar Goldmine by ConceptJunkie · · Score: 1, Troll

      Oh, come on, pointing out grammar and spelling errors is like shooting fish in a barrel... and it's a barrel packed with sardines. And you have a cannon.

      It's obvious people like Hemos don't care about speaking proper English, or they are so hyped up on caffeine or kernel code or whatever and make an outrageous number of typos. Anyhow, pointing out the problems just seems to waste bandwidth. I suggest we all just sit back relax and float downstream and enjoy the stories and discussion.

      It's not worth "loosing" your cool.

      --
      You are in a maze of twisty little passages, all alike.
    2. Re:Grammar Goldmine by cburley · · Score: 1
      No kidding. ET may be out there, listening to broadcasts of Mersenne primes, but they probably don't respond because "them earthlings don't talk no good".

      --
      Practice random senselessness and act kind of beautiful.
    3. Re:Grammar Goldmine by kaisyain · · Score: 1

      Among them many belonging to /. readers (This is not a complete sentence; there is no verb!).

      "belong" is a verb. I bet the intransitive thing through you for a loop, though.

      "He belongs in prison."
      "That car belongs to me."
      "That book belongs to the library."

    4. Re:Grammar Goldmine by jimbo3123 · · Score: 0, Offtopic

      Actually there is a verb. The phrase have found functions as the verb in that sentence.

      The fact that Hemos doesn't know the difference between there and their doesn't change the basic sentence structure.

      --
      There should be a moderation category "Dumbest Comment EVER"
    5. Re:Grammar Goldmine by Anonymous Coward · · Score: 0

      Hemos didn't write it, hence the italics. Please quit trolling, and maybe contribute something useful to the discussion instead...

    6. Re:Grammar Goldmine by cpeterso · · Score: 1

      Among them many belonging to /. readers.

      True, the word "belong" is a verb, but in this sentence fragment, the word "belonging" is qualifying the supposed subject "many".

    7. Re:Grammar Goldmine by aka-ed · · Score: 1
      Trolling, are you? You don't contend that the subject-verb-object "Many belonging (to) readers." comprises a sentance, do you? Or that "through you for a loop" is properly spelt?

      --
      I survived the Dick Cheney Presidency 7 to 9 AM 7-21-07
    8. Re:Grammar Goldmine by Erasmus+Darwin · · Score: 0, Offtopic
      "The phrase have found functions as the verb in that sentence."

      The phrase "have found" functions as the verb of the previous sentence. The phrase that isn't a complete sentence is "Among them many belonging to /. readers."

    9. Re:Grammar Goldmine by cpeterso · · Score: 0, Offtopic


      Actually there is a verb. The phrase have found functions as the verb in that sentence.


      You will notice that this is actually one sentence and one sentence fragment. The verb phrase "have found" is part of the first sentence.

      The combined effort of many pc's joining Primenet in search for a new Mersenne prime may have found there fifth result. Among them many belonging to /. readers.

    10. Re:Grammar Goldmine by Anonymous Coward · · Score: 0

      "belong" is a verb. I bet the intransitive thing through you for a loop, though.

      However, it is still used incorrectly. "Among them many belonging to /. readers" should be changed to "Many of them belong to /. readers" (or something equivalent).

    11. Re:Grammar Goldmine by Kymermosst · · Score: 1

      You mean "sentence."

      Sorry, I had to.

      --
      "Alcohol, Tobacco, Firearms, and Explosives" should be a convenience store, not a government agency.
    12. Re:Grammar Goldmine by Anonymous Coward · · Score: 0

      How is it that you are able to use italics in your message yet miss the fact that, in the story, they are associated with the words of the submitter and not Hemos?

    13. Re:Grammar Goldmine by Bobo+the+Space+Chimp · · Score: 1

      > The combined effort of many pc's joining Primenet
      > in search for a new Mersenne prime may have found
      > there fifth result. Among them many belonging to
      > /. readers.

      It's not that bad, "there" aside. Either change "result. Among" to "result, among", or add "are" between "them" and "many". Ok, if you're fussy, PC should be capitalized, and an apostrophe is ok when pluralizing an acronym.

      --
      I am for the complete Trantorization of Earth.
  5. So what if ET... by iforgotmyfirstlogon · · Score: 5, Funny

    ...hasn't found this number is prime yet? Won't he/she just think this 3,500,000 digit number is a bunch of gibberish?

    - Freed

    --
    "Coffee should be black as hell, strong as death, and sweet as love." -Turkish Proverb
    1. Re:So what if ET... by superflex · · Score: 1

      yeah, probably. ET was too busy building spaceships and death rays.
      on the eve of armageddon, we'll all be hearing "bwa ha ha ha! foolish humans! what have your prime numbers brought you? nothing! you have wasted your precious resources, and now you will pay the ultimate price! except for you, Linus, you've got some good ideas..."

      --
      sigs are for suckers
    2. Re:So what if ET... by Andrew+Wiles · · Score: 2, Interesting
      So what if ET hasn't found this number is prime yet? Won't he/she just think this 3,500,000 digit number is a bunch of gibberish?

      The assumption is that if ET is out there, he's a lot more technically advanced than we are. Human civilization has been around for, oh, call it 8,000 years. The universe is more than a million times that age. So ET has a big head start.

      My theory is that the universe is teeming with life, but everyone else is smart enough to keep a low profile. Only the humans like to broadcast to the universe an exact measure of how technically backwards we are.

      --
      Andrew Wiles
      a**n + b**n != c**n for n > 2
    3. Re:So what if ET... by linzeal · · Score: 1

      If the aliens are evil wouldn't they take Elison and Gates instead?

    4. Re:So what if ET... by Rasta+Prefect · · Score: 1

      Generally such messages are designed to illustrate mathematical concepts. As such, I highly doubt they only sent one particular prime. Really, there isn't much of anything that we can send that's guaranteed to be intelligeble to an alien culture. They may not even share our fascination with prime numbers - while eminently useful to us, they aren't nessecary for things like engineering.

      --
      Why?
    5. Re:So what if ET... by kaisyain · · Score: 1

      And what would be the point of keeping a low profile? So the other civilizations that are 200,000 light years away don't send you a mean message and make you cry?

    6. Re:So what if ET... by iforgotmyfirstlogon · · Score: 1

      Perhaps he was referring to the philosopher from Peanuts that carried the blanket all the time.

      - Freed

      --
      "Coffee should be black as hell, strong as death, and sweet as love." -Turkish Proverb
    7. Re:So what if ET... by isomeme · · Score: 2
      [So what if ET] hasn't found this number is prime yet? Won't he/she just think this 3,500,000 digit number is a bunch of gibberish?

      They'll probably figure it's our Galactic ICQ number.

      Seriously speaking, if they think at all like us, they will figure that the number has some special property and start testing it. Testing a number for primeness goes much faster than searching for new primes. Having discovered that it is indeed prime, they will know just how clever we are and hopefully be so impressed that they will decide not to devour us.

      --
      When all you have is a hammer, everything looks like a skull.
    8. Re:So what if ET... by aka-ed · · Score: 1
      Yeh, I suppose not crying is one benefit. Keep in mind that as our civilization has "progressed," locked doors have not become obsolete.

      We got no lock on the planet. How do we know a vastly superior ET might have better uses for a life-supporting planet than we do?

      Umpteen Millenia Later.... :
      Brix, do you remember that planet we incubated Ixvo Nartecs ago? Turns out that unusual radio signature was a prime -- may have been a pseudo-intelligence there!

      --
      I survived the Dick Cheney Presidency 7 to 9 AM 7-21-07
    9. Re:So what if ET... by the_2nd_coming · · Score: 2

      or, being consumed by their thought that they are and should be the only intelegent beings in the univers, will come down and destroy our planet out of fear that one day we will surpass them in thechnological abilities and become the dominant beings in the universe.

      --



      I am the Alpha and the Omega-3
    10. Re:So what if ET... by Anonymous Coward · · Score: 0

      Imagine the ultimate irony... ETs are actually sending out the highest prime THEY'VE discovered, using Seti@home we just received it, it was processed over to the Prime search and they "found" it ;) Then we must process it to double check the validity... Of course, do we really want to talk to people that are pretty much at the EXACT same spot technologically as us? Knowing as much about human nature as we do, I think we would rather reach a race much more advanced and try to leapfrog our own development... Or of course, meet a species that is about as developed as we were in the 1400s that happen to live on a very rich planet full of goodies and willing to mine their wealth in exchange for high tech devices like radio and such :)

    11. Re:So what if ET... by Anonymous Coward · · Score: 0

      You know Jeff Goldblum is going to be involved there somehow!

    12. Re:So what if ET... by Anonymous Coward · · Score: 0

      Yeah, that'd be great...

      Hello??? They won't have any uses for radios! They don't have any radio stations. Duh...

      :-)

    13. Re:So what if ET... by Joe+Decker · · Score: 1

      Actually, seriously speaking the number is conveyed in the ET broadcast not as a decimal epansion but as 2^NNNNNNN-1. This is a major hint to the ETs. (I forget what N is, it doesn't really matter.) Show that to someone familiar with number theory and the idea that it's a possible prime would come up before you had to start testing a lot of other properties of numbers. Then you have to test the idea, but that's not so hard.

    14. Re:So what if ET... by Pakaran2 · · Score: 1

      As a member of the mailing list for the project, the identity of the number hasn't even been released - just the fact that one was found, and THAT has been known under 16 hours. Any message sent to outer space using a Mersenne prime must have used one of the earlier, smaller ones.

    15. Re:So what if ET... by colmore · · Score: 1

      and even if we gave them our stations, they still wouldn't have any good ones! hah!

      no, i think of all the technology we have that someone in the 14th century might want, refrigeration probably tops the list. that or an assault rifle.

      --
      In Capitalist America, bank robs you!
    16. Re:So what if ET... by dsl · · Score: 0

      No, if the aliens are evil, they'll make us KEEP Ellison and Gates.

      --
      I refuse, on principle, to have a .sig.
    17. Re:So what if ET... by dmatos · · Score: 2

      Especially since it will probably be transmitted in binary, and look like:
      111111111111111111111111111111...
      (2^k-1)

      --

      It may look like I'm doing nothing, but I'm actively waiting for my problems to go away.
      --Scott Adams
  6. Perspective. . . by czardonic · · Score: 1, Insightful

    That we devote this much co-operation, time and energy to the quest for prime numbers while hatred, poverty, disease and environmental destruction continue to plague our race is hardly an advertisement for our planet's advancement.

    --
    Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    1. Re:Perspective. . . by cburley · · Score: 5, Insightful
      That we devote this much co-operation, time and energy to the quest for prime numbers while hatred, poverty, disease and environmental destruction continue to plague our race is hardly an advertisement for our planet's advancement.

      Yes, and we're all awaiting your proposal for how to use a bunch of idle PCs and bandwidth to wipe out hatred, poverty, disease, and environmental destruction.

      Until you get back to us with that, stop complaining about how we entertain ourselves, okay?

      --
      Practice random senselessness and act kind of beautiful.
    2. Re:Perspective. . . by Microlith · · Score: 4, Insightful

      That in spite of all the bad things happening, people can give all those who would tear them down the middle finger, and continue on in purely academic research?

      I think PART of humanity has advanced, but those who:

      a) cause misery
      b) profit off misery
      c) whine about misery

      haven't really gotten anywhere.

    3. Re:Perspective. . . by czardonic · · Score: 1

      stop complaining about how we entertain ourselves, okay?

      There is a difference between entertaining yourself and demonstrating the advance of science on our planet. Some endeavors might acheive both. As far as I can tell, this does neither.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    4. Re:Perspective. . . by czardonic · · Score: 2, Insightful

      I think PART of humanity has advanced, but those who:

      a) cause misery
      b) profit off misery
      c) whine about misery

      haven't really gotten anywhere.


      You forgot:

      d) crow about how smart they are and squander their energy on trivialities.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    5. Re:Perspective. . . by Temkin · · Score: 1

      You forgot:

      d) crow about how smart they are and squander their energy on trivialities.


      You obviously know nothing about the value of pure research. The beauty of it is, you don't know what will come of it. Edison came very close to inventing the vacuum tube. But he'd solved his problem, electric light, and sought to solve the "misery of darkness" by commercializing it. Had he played with it a bit more in the lab, where would we be today? How about the Apollo program? Didn't do a thing for world hunger or suffering... or did it? Most dismiss it as cold war grandstanding, and a huge waste of money. But look at the value of all the technology that came from it. You don't know what will come of the 39th Mersenne prime, neither do I, or the people that found it. Time will tell.


      Now as to the underlying premise... To be honest with you.... I think you've been suckling from the public school system's socialist teat for too long. I could care less about your misery or anyone elses for that matter. By all accounts there's no general solution to the list of problems you've presented at this time. Everyone "getting together" and trying to solve it is a complete waste of time. I for one find it increases my personal misery, and reduces my quality of life, as I become a slave to your socialist agenda. Life is competative. Get over it, and go compete. Do something useful... Quit whining.


      Temkin

    6. Re:Perspective. . . by cburley · · Score: 1
      There is a difference between entertaining yourself and demonstrating the advance of science on our planet. Some endeavors might acheive both. As far as I can tell, this does neither.

      Well, it certainly entertained me -- especially the silly posts saying "can't we do something oh-so-much-holier with all those resources???", like yours! Thanks!

      ;-)

      --
      Practice random senselessness and act kind of beautiful.
    7. Re:Perspective. . . by truesaer · · Score: 2
      Here's my proposal....we can all use our idle CPU cycles to send out massive amounts of spam preaching love and tolerance, and for the hungry people techniques for good agriculture.


      All the worlds problems solved, just like that!

    8. Re:Perspective. . . by czardonic · · Score: 0

      Glad we agree:

      Do something useful...

      My point exactly.

      Now, why don't you follow your own advice instead of advertising your own selfishness?

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    9. Re:Perspective. . . by aka-ed · · Score: 1

      It doesn't entertain either you or me, but it entertains cburley and many others, while making use of idle computer cycles. So what is your problem? Is posting your low opinion of such endeavors good use of your time, when you could be out there pulling the plow and feeding the hungry?

      --
      I survived the Dick Cheney Presidency 7 to 9 AM 7-21-07
    10. Re:Perspective. . . by aka-ed · · Score: 0

      Now, why don't you follow your own advice instead of advertising your own selfishness?

      And what are you accomplishing by filling this thread with flamebait and trolls? If you don't like the topic of the thread, move on.

      And who is the insane moderator marking this troll as "insightful"? He should also move on to a topic more to his liking instead of trashing this one.

      --
      I survived the Dick Cheney Presidency 7 to 9 AM 7-21-07
    11. Re:Perspective. . . by Anonymous Coward · · Score: 0

      By running our PCs full-tilt 24 hours/day we will surely have some impact on the environment. Contribute to globalwarming.net.

    12. Re:Perspective. . . by czardonic · · Score: 1

      I have no problem with people entertaining themselves by donating their spare cycles to someone elses project and then pretending like they were an integral part of the result (sad though it may be). I simply question whether this particular endeavor, given the problems that we have failed to solve, proves that science is advancing on this planet. That is not to say that science is not advancing, just that in the grand scheme of things, this is hardly spectacular.

      There was a reason I titled my comment "Perspective." Here we have evidence of what can be achieved by combining the small efforts of many volunteers. Yet, what do we do with this power? Apply it to problems of substance or import to the human race? No. We apply it to the search for an even longer prime number. This reminds me of a Simpsons joke about the Space Shuttle missions. To paraphrase "The goal of this mission is to study the effects of weightlessness on tiny screws. This reseach could have literally millions of applications here on Earth, in everything from watchmaking to watch repair."

      I simply question whether it is an acheivement worthy of representing human advancement.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    13. Re:Perspective. . . by Anonymous Coward · · Score: 0

      To quote the comment you seem to be defending, "Quit whining."

    14. Re:Perspective. . . by Kymermosst · · Score: 1

      Here we have evidence of what can be achieved by combining the small efforts of many volunteers. Yet, what do we do with this power?

      The problem is, it only takes about 5 minutes of "volunteering" to do this. Install, configure, run. That's it. So you combined a lot of volunteered 5-minute blocks. The CPU time used by the project had nothing to do with man-effort, and therefore wasn't the large effort of any people, except maybe the programmers who wrote the software.

      You see, you think that this "volunteer" effort would be better spent ending poverty, loving everyone, curing disease, and ending (supposed) environmental destruction.

      While there are distributed programs doing medical research, it looks like you are out of luck on your other three categories.

      Now, let's say you can get everyone to spend five minutes that they would have spent installing and configuring the software that calculated this prime number on something like... working at the food bank to feed the hungry... either cooking, serving or whatever.

      Imagine managing a bunch of people that took a five minute shift? Do you REALLY think that it would be efficient at all?

      You see, to do work in the remaining three categories (end poverty, loving everyone, and stopping environmental destruction) requires a LOT more than five minutes from every person involved to be efficient and reasonable. I think you'll find a LOT more people willing to donate... say... five minutes than say... a full day. You'll find even less who will donate... a month. And not many people will donate six months or more.

      That really only applies to stopping poverty... that can be done with volunteer chunks. Loving everyone and stopping envrionmental destuction requires continual effort by EVERYONE. You won't get that. Sorry. There are a lot more people who would rather drive their cars than worry about the possibility of an oil spill in Alaska, and a lot more people who find no reason to love everyone. Personally, there are a lot of people out there I don't love... and, if I can use the term, even perhaps... hate.

      And finally, for stopping poverty, I might give a little more, but, you see, I don't have much money myself, seeing as how the tech bust has put me out of work, and I doubt anyone'd ever give me a dime I didn't work for. Thus, I am not inclined to end poverty anytime soon.

      But, to bring us back on topic:

      I simply question whether it is an acheivement worthy of representing human advancement.

      Of course, it is. Any advancement is still advancement, no matter the category, nor what our other problems are. After reading my arguments above, if you can pretend to agree with them for a moment, you might see that while we may fail in some areas considered important by some people, we can excel in others.

      --
      "Alcohol, Tobacco, Firearms, and Explosives" should be a convenience store, not a government agency.
    15. Re:Perspective. . . by Anonymous Coward · · Score: 0

      The Department of Energy has numerous super computers that investigate problems such as global warming modelling. So "environmental destruction" is definately something the clusters could probably help with.

    16. Re:Perspective. . . by czardonic · · Score: 1

      Any advancement is still advancement, no matter the category, nor what our other problems are.

      By this logic, building the worlds largest beer can pyramid qualifies. And you are right, some might agree. However, to an outside observer (the hypothetical alien), this would look like the folly that it is in the context of our planet, its potential, and the degree to which that potential has been realized. The worlds longest prime number is on par with the world largest beer can pyramid to the vast majority of the world. That is, a useless piece of trivia. I don't think that means that this project shouldn't be pursued. But please don't ask me to view it as an important advancement, representative of the progress of science on Earth.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    17. Re:Perspective. . . by Anonymous Coward · · Score: 0

      >But please don't ask me to view it as an important
      >advancement, representative of the progress of
      >science on Earth.

      Nobody, including the original post, said that it *was* an important advancement.

      Sheesh, these damn wishy washy hand wringing liberals...

    18. Re:Perspective. . . by czardonic · · Score: 1

      Nobody, including the original post, said that it *was* an important advancement.

      From the original post:

      "A previous found Mersenne number was used to show the advance of science on our planet in a message send into outer space."

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    19. Re:Perspective. . . by orius_khan · · Score: 1

      You're confusing scientific achievement with solving socialogical problems. Science researches information in search of FACTS, some truth that can be utilized to do certain activities or accurately predict other things. Hunger, poverty, etc etc., are not scientific problems that can be solved thru logic or sheer computation. Even if a theoretical solution to one of these problems was found, you'd still have to overcome politics of the leaders in charge of the world as well as get the irrational masses to accept it. Both of which are an art, not a science.

      So to say that "science" is not truly progressing because we still have world hunger is nonsense. By that reasoning science will never progress as long as there are problems in the world. And if there were no problems whatsoever, what need would there be for research into solutions for these non-existant problems?? There will ALWAYS be problems, and pure/abstract science research should always be promoted, because a useful application for its results can more easily be found after you've already got it.

      --
      Sometimes the best solution to morale problems is just to fire all the unhappy people.
    20. Re:Perspective. . . by Anonymous Coward · · Score: 0

      I agree that writing a computer application to use brute force to find Mersenne primes is not, in itself, an indication of humanity's advancement.

      The indication of "advancement" comes from the fact that significant scientific, mathematical and technological knowledge would have to have been achieved before any species could possibly compute such a number.

      If an alien race received this message, and had reached a similar or higher level of advancement, then they might recognize the number and realize that it came from an "intelligent" race.

    21. Re:Perspective. . . by grid+geek · · Score: 1

      I work with people who are highly active in this field, environmental simulation requires closely coupled processors and large amounts of memory, which basically means supercomputers. The distributed approach wouldn't work as the latency between systems is too great (especially if people are not online 24/7 and we have to wait for them to be online) and we can't afford to not have results returned.

      SETIs' strength is the fact that each unit is a seperate entity which does not require information from other units and if lost doesn't matter as each uniti is processed by several different clients to ensure accurate results and prevent cheating.

      As to the initial question of why we're not attempting to solve all the other problems I think the techie community does do a lot in terms of energy saving, recycling and good works, its just a shame that the politicians aren't as smart or far looking enough to do the same.

      Tell a man to improve the world and he'll do it in a century, tell him he has to get re-elected every four years and it may never happen.

    22. Re:Perspective. . . by cburley · · Score: 1
      Nobody, including the original post, said that it *was* an important advancement.

      From the original post:

      "A previous found Mersenne number was used to show the advance of science on our planet in a message send into outer space."

      Exactly, nobody claimed that it was an "important" advancement, merely that it might help illustrate the level of scientific advancement on our planet at a particular moment in time.

      Look, there's simply nothing we can do, individually or collectively, to precisely show to another species how advanced our science is. (I'm using "how" in a quantitative sense.) Merely collecting a snapshot for ourselves of the state of scientific progress across the board is, to put it simply, impossible; forget about then trying to accurately and precisely communicate that snapshot to another species we know next to nothing about, other than that they're capable of picking up our broadcasts (and therefore have some technological prowess at least approximating where we were, as a species, about a century ago).

      So, we pick some extremely simple concepts, like prime numbers, hoping they have some degree of universal interest, and communicate our best attempts at "hacking" them. (We hope that they don't end up thinking that's all we do with our time, but I'm sure alien intelligence wouldn't be so inadequate as to interpret a distant "hello" as indicating the sum total of human endeavour.)

      If you can find a way to encode the fact that we manage to use our "advanced science" to feed some one or two billion people more than would be possible using traditional agrarian (or "organic farming" techniques) in a fashion that is persuasively as easy for an arbitrary, perhaps entirely imagined, alien intelligence to grok as the concept of prime numbers, I'm sure many in the ET community would be happy to hear from you. Ditto for the fact that we have probably one or two billion people who are able to not have to worry about where their next meal is coming from and, instead, are free to explore ways to help mankind as they see fit (whether by improving farming techniques or discovering new Marsenne primes), or that we've had nuclear weaponry for decades now and still have managed to not wipe ourselves out, etc. Those are all things aliens might find very interesting, but I would think they're far harder to communicate, in a species-neutral fashion, to intelligent and technologically capable life on a faraway planet.

      In the meantime, I wonder if you consider the one hour spent daily by billions of people, like myself, in prayer and/or meditation is similarly "wasted" in that it could be used to eliminate hatred, poverty, disease, famine, and so on? Why or why not?

      --
      Practice random senselessness and act kind of beautiful.
    23. Re:Perspective. . . by czardonic · · Score: 1

      Exactly, nobody claimed that it was an "important" advancement

      Well, I would assume that an advancement worthy of demonstrating our scientific prowess is at least somewhat important. However, you point is well taken. It would be next to impossible to encapsulate most of our achievements in a way that could be transmitted in this way. However, my point was not that we should neccesarily be doing that. Rather, it was that we should be (well, at least could be) devoting our energy to more practical endeavors. Surely, feeding two billion more people a day is would be a more significant achievment than this quest for large prime numbers, regardless of whether we could tell these hypothetical aliens about it.

      As far as these idea of simple concepts, I question whether these large prime numbers qualify. After all, how long did it take us to find this prime number? Why assume that an alien species (assuming prime numbers would interest them, which they well might) would even recognize such a huge string of digits as prime? Unless we appended it to a series of all primes (at least down to those more easily recognized), wouldn't they have to basically "reverse enginieer" the number to recognize it was a prime?

      In the meantime, I wonder if you consider the one hour spent daily by billions of people, like myself, in prayer and/or meditation is similarly "wasted" in that it could be used to eliminate hatred, poverty, disease, famine, and so on? Why or why not?

      Only if it is time that you would otherwise spend addressing these things directly. But it's your time. If it inspires you to spend any amount of time addressing these problems that you would otherwise not, then it is time well spent.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    24. Re:Perspective. . . by Bobo+the+Space+Chimp · · Score: 1

      Not only that, sending this might be akin to sending the gold old-fashioned record with data on it just prior to the invention of the laser-based CD. Oh, ho! Their computer structure is at the inefficient massively parallel stage. We can tell because they think this kind of calculation is a big deal.

      Actually, world's largest beer can pyramid would show we're easy-going. Better yet, world's largest pyramid record holder is now made from beer cans.

      --
      I am for the complete Trantorization of Earth.
    25. Re:Perspective. . . by Bobo+the+Space+Chimp · · Score: 1

      > Even if a theoretical solution to [poverty and pals] was found

      Part of the problem is that there are no shortage of theoretical solutions. One could, in theory, lock people up in cages and feed them food using robots to do all the work. Not much of a life, but it works.

      I think aliens would be disgusted at our ability to force others to not harm themselves by threatening them harm, especially with the clear conscience of the right wing (God said so) and the left wing (power to the people, from each...to each, etc.)

      --
      I am for the complete Trantorization of Earth.
    26. Re:Perspective. . . by cburley · · Score: 1
      As far as these idea of simple concepts, I question whether these large prime numbers qualify. After all, how long did it take us to find this prime number? Why assume that an alien species (assuming prime numbers would interest them, which they well might) would even recognize such a huge string of digits as prime? Unless we appended it to a series of all primes (at least down to those more easily recognized), wouldn't they have to basically "reverse enginieer" the number to recognize it was a prime?

      I'm not the best person to ask, since I haven't bothered reading the literature on how SETI et al actually communicate this stuff (beyond a /. article, I believe it was, that showed how they illustrated the concept using some primitive symbology, hoping an alien species would recognize the importance). I assume the new number is merely a data point plugged into a larger communication that attempts to identify, to ET, that it is a very large prime number.

      But, my speculation is that those interested in communicating with ET assume that, given they're able to hear us, they share some basic mathematical principles that help decode universal constants and behaviors related to, e.g., radio astronomy; that those principles include some widely-shared fundamental theoretical underpinnings, such as prime numbers; and that, therefore, communications using examples of these principles in action are most likely to be interpreted as a measure of intelligence, compared to most of the other stuff we've considered sending (or have sent, e.g. Bach, Beatles, Elvis music ;-).

      As far as reverse-engineering primes, not being a sufficiently high-end mathematician, I'll only suggest that it's probably far easier to verify whether a given number is a prime than to find the next prime number in a sequence, since the former is a subset of the latter (or so I assume). If that's the case, getting into the magnitudes involved here surely indicates that a) we here on Earth are able to put in a given amount of work that b) is much greater than ET needs to verify that we did it correctly.

      Relating two other snippets of yours, plus one of mine:

      Surely, feeding two billion more people a day is would be a more significant achievment than this quest for large prime numbers, regardless of whether we could tell these hypothetical aliens about it.

      In the meantime, I wonder if you consider the one hour spent daily by billions of people, like myself, in prayer and/or meditation is similarly "wasted" in that it could be used to eliminate hatred, poverty, disease, famine, and so on? Why or why not?

      Only if it is time that you would otherwise spend addressing these things directly. But it's your time. If it inspires you to spend any amount of time addressing these problems that you would otherwise not, then it is time well spent.

      It is my opinion that searching for primes and generally studying math problems, or doing music, or ice-skating (which I'm about to go do, or at least try to do ;-), inspires many people just like praying inspires them, or others. For me, it all works, and often works together.

      That's why we do these things: we're humans, we find a wide variety of things inspirational, and we are better at directing our own lives than directing each others'.

      --
      Practice random senselessness and act kind of beautiful.
    27. Re:Perspective. . . by czardonic · · Score: 1

      As far as reverse-engineering primes, not being a sufficiently high-end mathematician, I'll only suggest that it's probably far easier to verify whether a given number is a prime than to find the next prime number in a sequence. . .

      I would imagine that is true, but only if you know that the number is prime. Otherwise, it is just a string of random information.

      Nevertheless, I can just imagine:

      Basby: "Holy shit Foob, I just wasted two days decoding this alien message, and guess what? It's a fscking prime number! That's all!"

      Fooby: "What the heck is a 'prime' number?"

      Basby: "It's a mathematical concept that. . ."

      Fooby: "Argh. Never mind! Don't get me started on math. I majored in the study of alien races so I wouldn't have to take math!"

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    28. Re:Perspective. . . by cburley · · Score: 1
      only if you know that the number is prime. Otherwise, it is just a string of random information.

      Right, which is why, as I think I said, the number is just a data point, or component, of a much larger message that attempts to introduce the concept of prime numbers via the initial series.

      You seem interested enough in the topic to read up on it further -- you might find the way the ET-hunters have coded the broadcasts to be at least informative, if not inspiring...but whether we'll end up embarrassed at our feeble attempts to encode "universal primitives" for consumption by an alien civilization as a prelude to higher-level communication is a debate that will likely not be answered in the next few hundred years, if ever.

      --
      Practice random senselessness and act kind of beautiful.
    29. Re:Perspective. . . by SlippyToad · · Score: 1
      You forgot:

      d) crow about how smart they are and squander their energy on trivialities.

      You have apparently forgotten about

      e) Meglomaniacs who feel they have to force the entire energy of human ambition into their personal agenda

      Not everyone's concerns are your concerns, and not everyone can be concerned about the same thing at once. It is you who have no sense of perspective.

      --
      One day I feel I'm ahead of the wheel / the next it's rolling over me / I can get back on / I can get back on
    30. Re:Perspective. . . by Anonymous Coward · · Score: 0

      up yours.

  7. Impressive, but.... by SplendidIsolatn · · Score: 1

    3,500,000 digits is only 1/3 the length required for the major ($100,000) payoff. We still have a long way to go for that one....

    --
    sig--we don't need no goddamn sig
  8. Waste of resources by atrowe · · Score: 0, Troll
    Just thinking about all the time, money, and CPU power that went into this disgusts me. While a prime number with 3,500,000 digits might have a nice cool factor, it is completely useless for any practical purposes.

    Right now, there are literally millions of people who are suffering on this earth, and the vast majority of those problems can be solved by science. We should be focusing our resources on curing disease, engineering more productive grains and vegatables, and discovering cleaner power sources rather than pissing away millions of years of CPU time trying to see who can come up with the biggest prime number.

    --

    -atrowe: Card-carrying Mensa member. I have no toleranse for stupidity.

    1. Re:Waste of resources by p3d0 · · Score: 1

      Yeah, so long as every ounce of human effort is not going into relieving human suffering, we're all wasting our time.

      Whatever.

      --
      Patrick Doyle
      I mod down every jackass who puts his moderation policy in his sig. Oh, wait a sec....
    2. Re:Waste of resources by Dief_76 · · Score: 1
      Dude, I totally understand human suffering and how it can be relieved by the awesome power of the CPU.


      But.. 3.5 million digits.. that's just too cool! C'mon, admit it. ;)

    3. Re:Waste of resources by Anonymous Coward · · Score: 0
      While a prime number with 3,500,000 digits might have a nice cool factor, it is completely useless for any practical purposes.

      You must hang out with Bill Gates. A prime number only has two factors: 1 and itself.

    4. Re:Waste of resources by Reckless+Visionary · · Score: 2
      Think of the children!!!

      ugh

      --
      I think I'll stop here.
    5. Re:Waste of resources by brer_rabbit · · Score: 1
      While a prime number with 3,500,000 digits might have a nice cool factor, it is completely useless for any practical purposes.

      [smartass]Actually, the stipulation is that the number has no factors except for 1 and itself. I guess you could consider the number 1 as nice cool.[/smartass]

    6. Re:Waste of resources by fistula5 · · Score: 5, Funny
      While a prime number with 3,500,000 digits might have a nice cool factor...
      Actually, the cool thing about primes is their *lack* of factors.
    7. Re:Waste of resources by ENOENT · · Score: 2

      Uh huh. How many CPU cycles does it take to synthesize a pizza, eh?

      If you want to make a distributed project to use spare CPU cycles to design new pharmaceuticals, engineer new food crops, or anything else that's "useful", go ahead. Otherwise piss off.

      By the way, it may not be obvious to you, but the only problems that can be attacked using distributed computing are those that we can figure out how to split up into large numbers of mostly-independent, completely algorithmic subproblems.

      --
      That's "Mr. Soulless Automaton" to you, Bub.
    8. Re:Waste of resources by Anonymous Coward · · Score: 0

      He wasn't implying that every minute of our lives should be dedicated to ending suffering, merely that a project such as this is almost totally useless. Can you think of a single benefit to having a 3.5 million digit long prime number? I sure as hell can't. All that CPU power would be a lot better utilized to do something productive. Intel's got that cancer cure distributed thing. That's a good cause. Hell, even rendering CG for the next final fantasy would at least have SOME practical use. This is just useless.

    9. Re:Waste of resources by Rasta+Prefect · · Score: 1

      Right now, there are literally millions of people who are suffering on this earth, and the vast majority of those problems can be solved by science. We should be focusing our resources on curing disease, engineering more productive grains and vegatables, and discovering cleaner power sources rather than pissing away millions of years of CPU time trying to see who can come up with the biggest prime number.

      And maybe you should donate the time and resources you use everyday reading slashdot to volunteer at the Red Cross or better yet - Join the Peace Corps! Also, I would argue that most of the problems with hunger and disease facing the planet are more social issues that technological. Anyway, thats not the point. Projects like this are an excellent way to work with distributed computing on a large scale and improve our knowledge of how it works and how it can be applied. Not everything has to be a great crusade to change the world.

      --
      Why?
    10. Re:Waste of resources by Kymermosst · · Score: 1

      How about we focus on NOT telling people what they should be focusing their private resources on, and NOT telling people how disgusting they are to you?

      Did you ever think it would be more productive to your cause to contribute YOUR time to it, rather than contributing your time to telling other people that they should spend THEIR time on it?

      Did it occur to you that there are some people who don't want any part of your agenda, that maybe they have different priorities?

      What disgusts me is people like you who try and push an agenda, but your way of getting people on board is to criticize what other people are doing, rather than make your effort look better with positive statements and actions.

      You might find people more willing to help with your issues if you didn't criticize their own (scientifically) valid projects.

      Just think about how much energy you "pissed away" with your negative statement. Nice, counterproductive work, that.

      And, for the record, a prime number generally doesn't have "a nice cool factor" apart from itself, and it's unit. (1, in this case.)

      --
      "Alcohol, Tobacco, Firearms, and Explosives" should be a convenience store, not a government agency.
    11. Re:Waste of resources by colmore · · Score: 1

      hahahahahahahahahah

      god that was good, i totally missed it too.

      --
      In Capitalist America, bank robs you!
    12. Re:Waste of resources by FrostedChaos · · Score: 1

      Um, Bill Gates took graduate level math courses at Harvard. Of course, he probably also knows the difference between a "coolness factor" and a numerical factor...

      --
      "Any connection between your reality and mine is purely coincidental." -Slashdot
    13. Re:Waste of resources by Anonymous Coward · · Score: 0

      "The obvious mathematical breakthrough [to break modern encryption] would be development of an easy way to factor large prime numbers."

      -- Bill Gates from "The Road Ahead," p. 265.

      Remind me not to sign up for any Harvard math courses!

    14. Re:Waste of resources by SMN · · Score: 2
      Maybe he considers 1 or the 3,500,000-digit prime number itself to be a "nice cool factor."

      Remember, even primes have two factors!

      --
      -- Imagine how much more advanced our technology would be if we had eight fingers per hand.
    15. Re:Waste of resources by Florian+Weimer · · Score: 2
      Remember, even primes have two factors!
      Even primes? There is just one even prime, and it's the oddest one of all!
    16. Re:Waste of resources by SMN · · Score: 1
      Touche.

      Although that's not the meaning of "even" I was trying to use. But you probably realized that. Wit is good.

      --
      -- Imagine how much more advanced our technology would be if we had eight fingers per hand.
  9. This is great news - 2 reasons by Audent · · Score: 3, Interesting

    First: distributed computing achieving something great. Don't get me wrong, I'm all for SETI, I've got it running on both my machines ... but being able to advance science be it math or cancer research or whatever is astonishingly cool.

    Second: it's entertaining to think we can prove our intelligence to another species by sending them proof that we've cracked a prime ... If they're astonishingly more advanced than us they'll look at it as being quaint and if they're not they'll look at it as something they can't understand. How would we react if something landed that proclaimed how smart the sender was?
    Of course, if they're "looking" at the wrong frequency or in the wrong band they won't see it at all... so many assumptions... so little time.

    --
    I am a leaf on the wind
    1. Re:This is great news - 2 reasons by LS · · Score: 2

      Considering the small timeframe humans have been civilized (10k years?), the chance that we are at anything but a severely inferior technology level is remote. Any advanced races would probably be comfortable in dimensions we can't even imagine, and probably be aware of humanity without us trying to contact them. We know an ant hill is there without being able to smell the phermones they use to communicate, right?

      LS

      --
      There is a fine line between being a cultivated citizen and being someone else's crop. - A. J. Patrick Liszkie
    2. Re:This is great news - 2 reasons by Vuarnet · · Score: 2

      Second: it's entertaining to think we can prove our intelligence to another species by sending them proof that we've cracked a prime...
      Yup. Very entertaining.

      Until the alien lawyers arrive, waving around the Encyclopaedia Galactica version of the DMCA, and sending us all into oblivion with their phasers, torpedoes and subpoenas, for cracking part of the encryption to Life, the Universe and Everything.

      --
      Tongue-tied and twisted, just an earth-bound misfit, I
      Learning to fly, Pink Floyd.
    3. Re:This is great news - 2 reasons by at_18 · · Score: 1

      being able to advance science be it math or cancer

      That's a kind of science that I didn't know about :-)

  10. Prime stamp by Andrew+Wiles · · Score: 2, Informative
    http://www.utm.edu/research/primes/mersenne.shtml
    After the 23rd Mersenne prime was found at the University of Illinois, the mathematics department was so proud that they had their postage meter changed to stamp "2^11213-1 is prime" on each envelope.

    Does anyone have an envelope with this stamp on it?

    --
    Andrew Wiles
    a**n + b**n != c**n for n > 2
    1. Re:Prime stamp by Anonymous Coward · · Score: 0

      Yes, and I'm selling it for $50.00 US. You pay the shipping.

    2. Re:Prime stamp by 3am · · Score: 2

      i feel obligated to correct you:

      3**2+ 4**2 == 5**2 ...

      so -- Andrew Wiles a**n + b**n != c**n for n>2.

      anyway, wiles et al actually proved the taniyama-shimura conjecture that all elliptic curves are modular. someone had already noted that fermat's last theorem and the taniyama-shimura conjecture were equivalent.

      </anal retentive rant>

      --

      A: None. The Universe spins the bulb, and the Zen master merely stays out of the way.
    3. Re:Prime stamp by shawnkirst · · Score: 1

      I'm no math whiz, but it does clearly say 'for n>2' and yet you've used n=2 in your example.

    4. Re:Prime stamp by Anonymous Coward · · Score: 0

      &lt/anal retentive rant&gt

      dude you forgot the open tag!!!

    5. Re:Prime stamp by Genyin · · Score: 1

      I'm no math whiz, but it does clearly say 'for n>2' and yet you've used n=2 in your example.
      chances are the guy fixed his sig.

  11. What if... by ellem · · Score: 5, Funny

    ET has no concept of our numbers?

    I always find the idea that ET is "like" us somehow. That Will Smith can get into and operate an alien spaceship.

    Zog: Mumtar! The Earthlings have sent us I Love Lucy and now what appears to be a very large cable bill!

    Mumtar: Destroy them!

    --
    This .sig is fake but accurate.
    1. Re:What if... by Rasta+Prefect · · Score: 1


      If ET doesn't understand mathematics, its unlikely ET progressed as far as building radios, either. Prime numbers are a fairly simple mathematical concept, one thats been found by every human society developing a complex system of mathematics. It's not simply some artifact of the decimal system. Prime numbers are prime in any base. Once you've got whole numbers and division you're pretty quickly going to come to the conclusion that some of them can't be divided by any of the others.

      --
      Why?
    2. Re:What if... by Anonymous Coward · · Score: 0

      so what if average joe human picked up a stream of prime numbers on their radio while cruising the galaxy in their latest dodge/ford/moocowjoiasdf galactic cruiser? Do you think he/she would care? No.. that is the persons point, only someone searching for it in that exact signal format would notice. The chances of both happening are very slim. More then likely what would happen is some evil scientists gets the stream, and continues to find very high prime numbers and jealously guards them only to release one every few years to keep his professorship... bwuahahahaha

    3. Re:What if... by donutello · · Score: 3, Funny

      What do you mean ET has no concept of numbers? How will we upload Macintosh viruses to their computers if he doesn't even understand numbers?

      --
      Mmmm.. Donuts
    4. Re:What if... by laertes · · Score: 1

      I think that any species we would be interested in talking to us would be naturally curious about the weird bleeps and bloops we might send them. They would hopefully look for a pattern, which I think is pretty clear. Don't tell me that the sequence of numbers 2, 3, 5, 7, 11, 13, 17 ... wouldn't make you you think.

      --

      Yes, I'm still a junky. Are you still a bitch?
    5. Re:What if... by Anonymous Coward · · Score: 0

      That was a Java virus!

    6. Re:What if... by czardonic · · Score: 1

      But would they realize that this number was prime? Seems more likely that they would try to divine some kind of message, and a)conclude that the transmission was gibberish or (b project some meaning onto it, and who knows what it might be (might not necessarily be friendly). As it stands, we are broadcasting a huge number which is supposed to say something like "Hey, look how smart we are! We have a very large prime number." Not the most intelligent means of introduction, if you ask me.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    7. Re:What if... by Anonymous Coward · · Score: 0

      Macintoshes aren't even compatible with themselves (see also IIe, Lisa, Mac) how (ahem) in the universe could JEFF GOLBLUM (of all people) upload a virus to them... Advanced species yes, in conact with Symantec? no!

    8. Re:What if... by Elwood+P+Dowd · · Score: 2

      If they don't understand numbers than they will not be able to receive the communication anyway. They're not *our* numbers. Numbers are discovered, not invented.

      --

      There are no trails. There are no trees out here.
    9. Re:What if... by whydna · · Score: 1

      Ok, I'm totally going to get flamed for this...

      But in the movie, they'd had that ship for about 30-40 years, right? So, in that time, perhaps they'd managed to decode/understand it's computer architecture(yeah, that's a hell of a hack, but it'd fall under DOD (which implies deep pockets)). Perhaps they'd even developed and means to compile programs for the system.

      All you see in the movie is that Jeff's character says something lame like "that's a brilliant idea... catch a cold... narf". Perhaps in the meantime (between that scene, and the "next morning"), he'd had time to consult with some of the staff (especially those responsible for writing code for the system), and manged to develop a virus for the architecture.

      Perhaps in that aliens society, every"one" trusts each other and there is no need for security (like there is on any *NIX system, etc), and thus the concept of a computer virus was beyond their comprehension. So, in "fact", it might have been possible for them to have created a virus by building on the technology which they had time to analize over the years.

      Of course, it was a kinda lame movie... so I'm probably going out on a limb here. =)

    10. Re:What if... by Anonymous Coward · · Score: 0

      Interesting angle. I'm going to have to watch the movie again to see if what you say makes sense.

    11. Re:What if... by Bobo+the+Space+Chimp · · Score: 1

      It makes tremendous sense as long as their society has been homogenously (?) governed for a long, long time, as seems so since they were Borglike in telepathic communication.

      With no set of hackers, paid or otherwise, trying to invade the systems, they could be extremely vulnerable.

      --
      I am for the complete Trantorization of Earth.
    12. Re:What if... by fuzza · · Score: 1

      > But in the movie, they'd had that ship for about 30-40 years, right? So, in that time, perhaps they'd managed to decode/understand it's computer architecture

      <pedantic>
      Sorry to ruin the theory, but I believe Dr Okun said that they couldn't duplicate the power source, so all the "cool gadgets" (presumably this includes the computer system) had only come on the last couple of days.
      </pedantic>

      My $0.02...

      --
      Can't find examples of evolution? No matter, neither could Dawkins
  12. Folding your Distributed Computing by joshamania · · Score: 5, Informative

    I really wish that more folks would look over at Stanford's Folding@Home Project . I personally think it is the single most important and fascinating distributed computing project available. Just think, instead of searching for obscure numbers, or aliens, or trying to break the latest RSA key, you could be curing cancer with your spare CPU cycles!!!

    1. Re:Folding your Distributed Computing by scoove · · Score: 2

      Does this folding@home thing actually work now? I downloaded clients to several machines and was disappointed at how broken it was. My cycles have continued to go for distributed.net and seti@home ever sense.

      Granted, it was awhile ago when I tried the folding@home stuff, but even the uninstall was horribly broken and it looked like something that really shouldn't be on any computer that couldn't be trashed.

      *scoove*

    2. Re:Folding your Distributed Computing by joshamania · · Score: 2

      They recently released a 2.0 version. While there still is no screensaver for Linux, I've been running the console version for weeks now with much success.

      The windows client is muchmuchmuch better now too. It doesn't only act as a screensaver, but a background console that runs on spare cycles.

    3. Re:Folding your Distributed Computing by Anonymous Coward · · Score: 0

      No SMP support?

      hmmm....

    4. Re:Folding your Distributed Computing by RainbowSix · · Score: 2

      Lack of SMP support means you run two instances of the client. You can hardly use that excuse to discredit the client.

      --
      --------
      It's OK to be social, just don't tell anyone about it.
    5. Re:Folding your Distributed Computing by nuetrino · · Score: 1
      First let me say that I give blood and do many of the other socially responsible things one should do to help those fortunate that ourselves.

      That said, why should I donate my spare cycles to a project that will only help those who can afford to pay. After all, the drug companies will take the publicly funded research, use it develop a product, claim that they incurred all the development costs, price it higher than most people can pay, and use the profits to bribe congress into extending the patents beyond all reasonable time frames.

      Admittedly, the search for these numbers may seem inconsequential in comparison to all-important cure for cancer. However, these numbers cannot be patented, encrypted or otherwise hidden. The cost of studying, reading, and enjoying these numbers is often nothing higher than a trip to the library. It is exactly the apparent worthlessness to the money grubbing, uncreative, management elite that makes such pursuits so enjoyable.

    6. Re:Folding your Distributed Computing by sam_handelman · · Score: 1

      curing cancer with your spare CPU cycles!!!


      While structural methods certainly have application in cancer treatment, the link is indirect, at best. It is HIV treatment where the really stunning successes for applied structure studies have been made (not a rigorous scientific judgement, of course.)

      Before you go and commit your (precious, after all you could give it to Kazaa) bandwidth and CPU cycles to some project, you should take a critical look at how successful it really is, aside from how wonderful any potential successes might be. Certainly, if there were alien transmissions out there (hah) SETI would be, quite frankly, more important than this, and I work in proteomics.

      Anyway, check out CASP4 (Critical Assessment of techniques for Structure Prediction, the one that ended Sep of last year) and make your own judgements about how feasable these techniques really are, and about the successes of the stanford team in particular.

      --
      The good and new comes from no quarter where it is looked for, and is always something different from what is expected.
    7. Re:Folding your Distributed Computing by Anonymous Coward · · Score: 0

      It's gotten worse for Windows. It reacts slowly (full screen screen saver still running when Im browsing mozilla), and it is the biggest memory leaking software Ive met. It's simply not worth my time.

    8. Re:Folding your Distributed Computing by talonyx · · Score: 2

      I think that if these things were actually going to cure cancer, the ACA or other groups would donate the money for real supercomputer time to the project.

      People are dying NOW from these terrible afflictions. It's not a little open source hobby or a grad project, it's serious medicine. If the creators are willing to treat it as a toy then I'm not going to donate my CPU cycles to them - they're better off being wasted on Kazaa for my porn downloading pleasure.

    9. Re:Folding your Distributed Computing by shani · · Score: 1

      That said, why should I donate my spare cycles to a project that will only help those who can afford to pay.

      While I mostly agree with you, remember that patents are actually good in some regards. First, the information in the patents must be made public. Second, they do expire eventually.

      If I was a person dying of AIDS in Brazil, unable to afford the drugs that would keep me alive, I might not be so impressed with this argument, but the research will eventually be moved into the public domain (assuming they follow the typical route and patent the related technology, and Disney doesn't get patent law changed to extend them to 2.73E4 years).

    10. Re:Folding your Distributed Computing by joshamania · · Score: 2

      "curing cancer" is fodder for the masses, so to speak. It gets peoples attention, and those not familiar with molecular biology can understand that better than a diatribe on why they should help model proteins.

    11. Re:Folding your Distributed Computing by Bobo+the+Space+Chimp · · Score: 1

      Third, a system with expensive, for-profit solutions is always better than a system without solutions. One might argue a system with free/cheap solutions is better still, but not if it constantly lags farther and farther behind the first.

      --
      I am for the complete Trantorization of Earth.
    12. Re:Folding your Distributed Computing by sam_handelman · · Score: 1

      "curing cancer" is fodder for the masses, so to speak. It gets peoples attention, and those not familiar with molecular biology can understand that better than a diatribe on why they should help model proteins.

      Oh, come on. This is supposed to be a geek/technical forum; people should understand the nature of the thing their commiting resources too (I say again) before they commit them. Geeks, smart people (ideally) will read biology related posts to get educated on the subject, not to get motivated or hyped up.

      Rather than say "curing cancer," say "rapidly develop medicines to target newly discovered proteins in newly discovered or recently discovered diseases - and rapidly develop replacement medicines (antibiotics) as old ones become ineffective."

      That's much more accurate and certainly not above the level of an intelligent slashdot reader - and if the script kiddies can't decipher it with their m4d ski11z, well, screw 'em (the brats.)

      --
      The good and new comes from no quarter where it is looked for, and is always something different from what is expected.
    13. Re:Folding your Distributed Computing by Anonymous Coward · · Score: 0

      even more useful would be an open source distributed computing project to forecast earthquakes using a variety of seismometry devices, even handhelds. this would be cheaper and save and extend more lives than the folding protein modeling used to fight cancer. in addition it could create some very funny results, such as predictions that governments are in no position to control.

  13. Participate! by chuckw · · Score: 4, Insightful

    Please, join in the fun. Go to www.mersenne.org to join. You've got an approximately 1 in 100,000 chance of winning the next EFF prize for finding a 10,000,000 digit prime number. That's way better than playing the lottery folks!

    --
    *Condense fact from the vapor of nuance*
  14. Erm by Anonymous Coward · · Score: 0

    I think you'ill find that it's speaking "correct" english, not "proper" english :)

    1. Re:Erm by ConceptJunkie · · Score: 1

      From the American Heritage dictionary:

      proper adj. Abbr. prop. 1. Characterized by appropriateness or suitability; fitting. 2. Called for by rules or conventions; correct. 3. Strictly following rules or conventions, especially in social behavior; seemly.

      I think meaning two works very well for what I was trying to say. However, I would agree that the term "correct" would more commonly be used in this context.

      --
      You are in a maze of twisty little passages, all alike.
  15. Decss? by VA+Software · · Score: 1


    What do you get if you save the prime as something.zip and unzip it?

    Something juicy?

    --

    ---
    http://slashdot.org/moderation.shtml
    1. Re:Decss? by Neon+Spiral+Injector · · Score: 1

      First it was a .gz file that was the prime number that gunzip'd into DeCSS. That is relavant because .gz files can have an arbitry amount of junk tacked on the end and still be valid. So the person just gzip'd decss.c and then added enough junk to make it into a prime number.

      Second a Mersenne prime is all bits 1, so you'll never have a valid gzip header to start with.

      So no luck there. But if you were to gzip the number it would compress up real well.

    2. Re:Decss? by Anonymous Coward · · Score: 0

      "First it was a .gz file that was the prime number that gunzip'd into DeCSS"

      I bet you're popular at parties.

    3. Re:Decss? by Anonymous Coward · · Score: 0

      What do you get if you save the prime as something.zip and unzip it?

      Something juicy?



      gzip -d bigassprime.gz

      gzip: bigassprime.gz: not in gzip format

  16. F SETI@Home by joshamania · · Score: 1, Redundant

    You can help cure cancer with http://foldingathome.standford.edu.

  17. Uh..... by dorker · · Score: 0

    I've been using Mersenne Prime #39 as my Slashdot password for years.

  18. One problem... by wrinkledshirt · · Score: 1

    Mersenne primes are used to tell ET about us.

    I wonder if it'll encourage or dicourage them from making first contact with us if they think we're all a bunch of math geeks with too much time on our hands?

    --

    --------
    Bleah! Heh heh heh... BLEAH BLEAH!!! Ha ha ha ha...

    1. Re:One problem... by Anonymous Coward · · Score: 0

      Galactic wedgies? That can't possibly be any fun.

  19. Interesting... by Anonymous Coward · · Score: 0

    But how is this relevant to ANY of the actual problems that face the world. Is this number going to feed the hungry? Is it going to shelter the homeless?

    1. Re:Interesting... by Anonymous Coward · · Score: 0

      Yes, it will actually. Pretty cool, eh?

    2. Re:Interesting... by RainMan496 · · Score: 1

      Mersenne primes point directly to perfect numbers, which have on occassion been used in computer algorithms.

  20. Agreed - was Re:Waste of resources by Sonicboom · · Score: 1

    There are other projects that need these CPU cycles... projects like SETI are a waste.

    If aliens are flying around in saucers from galaxies LIGHT YEARS away - then they will laugh at our "primitive" technologies. If they want to contact us - they WILL. And they probably already know about us already.

    And if they don't, but have superior technologies - it's like sending them a message "Hi - we have inferior technology - come colonize our planet".

    I'd rather give all my cpu cycles to Distributed.net's RC5-64 project.

    --
    [Connection closed by foreign host]
    1. Re:Agreed - was Re:Waste of resources by awaterl · · Score: 1

      I am a bit curious: why do you prefer to give your CPU cycles to Distributed.net's RC5-64 project? I looked at the project page, and it appears that what they are trying to accomplish is simply to break one preselected message. While this effort, if it takes a long time, does demonstrate that RC5-64 messages can be hard to crack, does it do anything else? Maybe I am missing something.

    2. Re:Agreed - was Re:Waste of resources by j-beda · · Score: 2
      Distributed.net is also doing Coulomb Ruler calculations, which have some real world applications in antenna design among other uses. Granted, a "pretty good" Coulomb Ruler is probably not much worse off than the "optimal" Columb Ruler, so it probably isn't buying THAT much.

      The thing is though, there is a value in creating communities that in large part cut across national lines and provide interconnectedness between people. Distribued computing projects can aid in this type of social growth.

      For those of you are complaining about this being a waste of time and resources, why not back up your indignation by personally making an online donation to the charity of your choice. Quit complaining about people having fun wasting less money and resources than they (collectively) probably waste on cigarettes, and do something yourself to make the world a better place.

  21. guess what by DarkClown · · Score: 1

    a friend of mine in dallas has a marsenne prime as a phone number and, even cooler, and a number away, also the result of a prime factor as yet another number... please don't crank call him!

    1. Re:guess what by iforgotmyfirstlogon · · Score: 1

      Relavent limerick for the day:

      There once was an engineer named Paul,
      Who had a hexagonal-shaped ball.
      The square of its weight
      with his pecker, plus eight,
      Is his phone number, give him a call!

      - Freed

      --
      "Coffee should be black as hell, strong as death, and sweet as love." -Turkish Proverb
    2. Re:guess what by Anonymous Coward · · Score: 0

      that woz kool!

    3. Re:guess what by Bobo+the+Space+Chimp · · Score: 1

      There was an eng'neer named Paul
      Who had an octahedral ball.
      He sat with great pain
      And jumped right up again
      And nailed himself to the wall.

      --
      I am for the complete Trantorization of Earth.
  22. Does this really prove we are smart? by garver · · Score: 2

    A previous found Mersenne number was used to show the advance of science on our planet in a message send into outer space.

    Yup, ET is going to get our message and probably laugh, "Ha ha, what morons, they've only found the 39th one! Lets defeat their pitiful technology, take their resources, and make them slaves! Muhahahahah!"

    How's the quote go? It's better to keep your mouth shut and leave people wondering if you're a fool, than to open it and prove that you are.

    1. Re:Does this really prove we are smart? by dhamsaic · · Score: 1

      "It's better to be silent and thought a fool than speak and remove all doubt."

      --
      Every once in a while I like to masturbate a new word into my vocabulary, even if I don't know what it means.
    2. Re:Does this really prove we are smart? by garver · · Score: 2

      Yes. Thank you.

    3. Re:Does this really prove we are smart? by Jburkholder · · Score: 1

      What!? They're made of meat !? What do you mean 'made of meat'?

      That's what I'm telling you, they are made entirely of meat.

      Well, that explains the prime with only 3 million digits, doesn't it?

      Yep, what should we do?

      Just forget about them, then. Delete the recording of their transmission and the survey findings. Pretend it never happened.

      Good answer.

    4. Re:Does this really prove we are smart? by colmore · · Score: 1

      If ET had found the 100th or the 1000th or even the 1000000th Mersenne prime, I wouldn't be too impressed. It would only mean they've been around longer than us.

      If they had, on the other hand, found a way of calculating the nth mersenne prime, THEN I'd be pretty damn impressed.

      --
      In Capitalist America, bank robs you!
    5. Re:Does this really prove we are smart? by Squiffy · · Score: 1

      I haven't laughed so hard in a long time! 13...14...15...16...17...18...19...20. Okay, now I can post this.

  23. Meanwhile... by Anonymous Coward · · Score: 0

    >There is an unconfirmed claim for Mersenne prime #39 of over 3,500,000 digits

    Uhm... mersene.org is down... but this time it's a confirmed claim of 3,500,000 slashdot-fowarded hits :)

  24. i'll join ya'll on the fun... by jeffy124 · · Score: 2

    ... just as soon as i get my hands on a $415 thous

    --
    The One Rule Of Chess You'll Ever Need: Don't play someone who carries a kit in their bookbag.
    1. Re:i'll join ya'll on the fun... by linzeal · · Score: 1

      Well since you last heard it has been upped to $800,000 and 120 years in prison sucks to be him.

  25. ET's comment... by eldurbarn · · Score: 1
    Geez... it's just a bunch of "1"'s. No information there...

    --
    -Eldurbarn
    1. Re:ET's comment... by Neon+Spiral+Injector · · Score: 1

      Oh, geez. I'm rolling on the floor with this one, but no one has modded it funny yet. Oh well...

  26. Pride by Kailden · · Score: 1

    After the 23rd Mersenne prime was found at the University of Illinois, the mathematics department was so proud that they had their postage meter changed to stamp "2 ^11213-1 is prime" on each envelope. Meanwhile, the humble physicists continued tests on thier time-travel prototype by sending an beaker into the future, wrote it in thier logs, and went home and ate bologna sandwiches.

    --
    I need a TiVo for my car. Pause live traffic now.
  27. No half assed help, please by IdocsMiko · · Score: 4, Funny
    Please don't volunteer for PrimeNet unless you are willing to devote yourself to the project. Too many people are signing up only to realize they are too busy for the task at hand.

    If you can't do the time, don't do the prime.

    (snort, snicker, guffaw, I can die a happy man now)

  28. Another productive project, from the same people by CTho9305 · · Score: 1

    Genome@home It does similar things, and is also by PandeGroup. My team gave up on Folding after we had too much trouble with the client, and genome seems much better (of course, Folding has also most likely improved)

  29. Uncrackable encryption by Anonymous Coward · · Score: 0

    Choose any two large Mersenne primes, multiply them together, and there you go: 10,000,000-bit encryption! Totally unbreakable!

    Unless they go ahead and brute-force all 39^2 possible such keys... but this would require... err... well... ah crap.

  30. It generally helps to have enough data... by yndrd · · Score: 1

    What most people don't tell you about the SETI@home project is that there are far more people processing the data than there is data to process. Most of the packets you're downloading to scan have been scanned dozens of times already--there just isn't enough data to justify all that computing power.

    Now, if we built more radio telescopes...

    1. Re:It generally helps to have enough data... by yndrd · · Score: 1

      A better link for info about more telescopes.

    2. Re:It generally helps to have enough data... by Bobo+the+Space+Chimp · · Score: 1

      They have to duplicate some from every submitter out there from time to time, just to compare results to see if someone is spoofing results to gank themselves higher up the list.

      --
      I am for the complete Trantorization of Earth.
  31. That'll get us off on the right foot ... by karb · · Score: 1
    Why do we assume that math is the best way to impress extra terrestrials? If it impressed _us_ it would be incorporated into a reality show or a saturday morning teen sitcom.

    I think the ultimate endeavor of human achievement is Truckzilla. A truck that can eat other trucks and breathes fire. I can see the aliens talking to each other ... "Sir, the terrans are too primitive for us to contact ... all we can receive are long numbers and primitive drawings ... Wait! It seems they have finally developed a truck that breathes fire and can eat other trucks! It's the only true measure of a sophisticated civilization."

    --

    Jack Valenti and the MPAA are to technology as the Boston strangler is to the woman home alone

  32. what illiterate moron wrote this article? by Anonymous Coward · · Score: 0

    i expect a mistake every once in a while,
    but damn, get a clue, d3wd!

  33. So what ? by Rosco+P.+Coltrane · · Score: 0, Offtopic
    I personally discovered the smallest prime number in the world (it's minus the largest one) and nobody ever mentionned it ...

    I mean, how biased can /. be ?

    --
    "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
  34. Hmm...what if they're not big on math? by dasmegabyte · · Score: 2

    Seriously -- not speaking from a naysayer standpoint or as somebody who thinks that SETI is a complete waste of time, although I am both of these -- what if ETs don't do math?

    I know, it's hard to fathom. But imagine this: human appreciation of art and life is rarely build on logical thought. When I say that my favorite painter is John Kacere, it has nothing to do with the trigonometry of his brush strokes and everything to do with what I like, a much more concept ideal. Conversation is a way of attempting to apply logic to what is essentially an illogical process, to explain a biological reaction with words and phrases.

    So what would I think if Chewbacca beamed a thirty meg prime number into my PowerBook? I sure as hell wouldn't pick up instantly on its nature. I'd probably try and run it through a gif converter or play it on Audion before I'd think to perform the three year process that would uncover it as a prime number. If we're trying to make contact with primes, it seems that we're restricting our target intelligence to creatures smarter than me. Which seems defeatist. Why not start smaller, with a fibinacci sequence or the differential calculus or a DivX file of "The Facts of Life" (divx having been developed in less than a year)? Don't we realize that they'll want to check our math even if they do figure out what the stream of gibberish we're sending is all about?

    And finally, what are they going to think when it gets there? Ifome superintelligent race of beings gets a message of a fact they already knew from a race of eggheads in the unfashionable end of the western spiral arm of the milky way, they're not inviting us to the intergalactic luau -- they're taking that hot race of Beings of Pure Sex from Omicron Six!

    --
    Hey freaks: now you're ju
    1. Re:Hmm...what if they're not big on math? by wildsurf · · Score: 1

      So what would I think if Chewbacca beamed a thirty meg prime number into my PowerBook? I sure as hell wouldn't pick up instantly on its nature.

      One nice property of Mersenne primes is that they can be expressed in very little space. So although the prime number written out in decimal may take up thirty megs, the same number could also be expressed more cleanly like this: 2 ** 23456789 - 1. (or whatever the actual exponent is.) This format would allow all 39 Mersenne primes to be encoded in only a couple hundred bytes, and it's not too farfetched that decent ET mathematicians could figure out what that sequence means. Of course, we might want to test out the signal on Earth mathematicians first...

      --
      Weeks of coding saves hours of planning.
    2. Re:Hmm...what if they're not big on math? by Anonymous Coward · · Score: 0

      If we're trying to make contact with primes, it seems that we're restricting our target intelligence to creatures smarter than me.

      That's right. What technological advances would occur if we were to discover a planet with 1 billion creatures dumber than you are? Nothing. No one cares about who your favorite painter is. People like you are useless and expandable. You won't ever push the envelope of knowledge. Get over it.

    3. Re:Hmm...what if they're not big on math? by intuition · · Score: 3, Insightful

      Well, I think it would be pretty hard for someone to devise a scenario where :

      a. some beings have reached the point (technologically, biologically, or otherwise) where they can recieve our message.

      b. they "notice" our message as not standard electromagnetic emissions

      c. they do not know anything about math

      I think A or B implies not C.

    4. Re:Hmm...what if they're not big on math? by Anonymous Coward · · Score: 0

      When you say your favorite painter is John Kacere, it probably has something to do with women in translucent underwear - that would be my guess.

    5. Re:Hmm...what if they're not big on math? by BHS_Turf · · Score: 1

      You forgot the all-important:

      d. They use a base-10 number system or would know enough to recognise a base-10 prime number.

      (sending out prime numbers is about as useful as sending out the nth digit of pi)

    6. Re:Hmm...what if they're not big on math? by Anonymous Coward · · Score: 0

      Not very important actually... A prime is a prime is a prime regardless of base.

    7. Re:Hmm...what if they're not big on math? by wildsurf · · Score: 1

      d. They use a base-10 number system or would know enough to recognise a base-10 prime number.

      Last I checked, primes are primes in all bases; they are not base-dependent.

      I imagine that we would send the mersenne exponent in binary. (And as someone pointed out above, it's very funny that the mersenne prime itself would consist of all ones!)

      --
      Weeks of coding saves hours of planning.
    8. Re:Hmm...what if they're not big on math? by dasmegabyte · · Score: 2

      Three points to the man who knows who John Kacere is. That being said, the reason I'm down with the K is that he's the only artist I've seen that can essentially turn a nude into a still life. And not in the gross way that Giger turns a nude into a landscape.

      --
      Hey freaks: now you're ju
  35. Finding a cure for cancer! by Daath · · Score: 2

    Why are there more of these projects? I myself, am participating in this one, or rather this.

    I used to run moo! (distributed.net) - then SETI@Home, then back to distributed.net. But now I am glad I found this one, makes me feel good to know that I could help cure cancer! I know a few people that could have used one :(

    --
    Any technology distinguishable from magic, is insufficiently advanced.
  36. Smallest? by Weird+Dave · · Score: 1

    Why do you consider negative numbers to be smaller than positive numbers? Most people usually equate the relative size of a number to its absolute value. So the smallest prime is two, and has been known for a long time.

    --

    Grumble, Grumble
    1. Re:Smallest? by Neon+Spiral+Injector · · Score: 1

      Not to mention the fact that negitive numbers have an additional factor of -1 and thus can't be prime.

    2. Re:Smallest? by VA+Software · · Score: 1

      The smallest prime is therefore -1

      Its absolute value is less than 2.
      It has two factors, 1 and itself.

      --

      ---
      http://slashdot.org/moderation.shtml
  37. Microsoft primes? by Old+Wolf · · Score: 1

    When I go to http://www.mersenne.org/, I get a large yellow screen saying "Distributed Com", and a few borders, and nothing else. Are they using DCOM for this?

  38. my theory by Anonymous Coward · · Score: 5, Interesting

    My theory is that they're gone. I mean, really think about it:

    20,000 years ago we were going around grunting at each other and living nomadic lives

    10,000 years ago we finally began to make small villages, and practice agriculture

    500 years ago we finally got the technology to send ships from Europe to North America

    200 years ago people still read by candle light, died of infections from wounds, had no telephones or radio

    100 years ago people still got around by horse and buggy

    60 years ago people did the most complex math problems by hand

    30 years ago NASA sent people to the moon with the computing power probably about what is found in a TI-89 calculator

    20 years ago no one had ever heard of the internet, and computers were slow and text-based

    10 years ago computers started to be a household necessity

    5 years ago the internet took off

    1 year ago the human genome was mapped

    The point is: find someone from 50,000 BC ago and take them forward in time to 15,000BC. they probably wouldn't see a damn bit of difference

    you could keep doing that for people of different ages, and the amount of time you could bring them forward without them really not being able to adjust to the massive changes in society would just get smaller and smaller. the time is getting so short now that a person can span it in a lifetime. we have middle-aged people today who are afraid to use computers.

    Now try to imagine 100 years into the future. Pretty tough. Might we have real AI? Humans on the Moon and Mars? Computing implanations? Nanotech? Quantum computers? Yep. Pretty shocking. But now try to imagine 10,000 years into the future. It's impossible. IMO there is a very good chance that there will be no such thing as humans, as we know them, 10,000 years from now. We will have advanced into something better than these meat and bone bodies.

    And the 20,000 years(max) from when humans first set down roots, and when they will no longer exist as humans, is nothing in galactic terms. It isn't even an eye-blink.

    I think any civilization more than about 500 years more advanced than us might actually be *undetectable*. Maybe they exist as pure energy. Maybe they have transcended this universe altogether. Maybe they are studying us right now, but we don't know it because they are doing it from the 4th dimension(like a 3D being looking down on flatland).

    I simply think anything beyond the near-future is impossible to even speculate on. The singularity. The end of history. Whatever you want to call it. It will be the end of the human race as we know it.

    1. Re:my theory by aka-ed · · Score: 1
      Your ideas intrigue me, mortal.

      Please step into your backyard a moment.

      Don't look up, please.

      --
      I survived the Dick Cheney Presidency 7 to 9 AM 7-21-07
    2. Re:my theory by hawkfish · · Score: 1

      This is Vernor Vinge "Signularity" theory. It assumes that growth does not have a natural bound (i.e. is not asymtotic in the long term). No idea if this is true or not.

      It also assumes we won't blow ourselves up or something (e.g. "Blood Music").

      --
      You will not drink with us, but you would taste our steel? - Walter Matthau, The Pirates
  39. Warning: Transformers joke by InfinityWpi · · Score: 2

    Well... that's just Prime.

  40. Re:Let me be the first to say by jholley · · Score: 0

    And you're reading a /. thread about primes. Is that any more useful than the people working on primes?

  41. To show our advance of science? by Anonymous Coward · · Score: 0



    Yeah, more like to broadcast to all those *truly*
    advanced civilizations out there just how retarded
    we actualy are...

    I see it now:

    Space alien picking up our pitiful boast:

    "3,500,000 digits? Heh - send a probe. We'll kick
    their ass then take their stuff."

  42. teams by xbrownx · · Score: 1

    So how does one join the Slashdot team?

  43. a whole lotta cpus by MegaFur · · Score: 1
    See those names in the number one slot in this list? Wonder how that happened? Simple. This college has a lot of computers. Let me see... I'd say there's 20 in the lab I'm in now.. then there's 60-70 in the lab I work in... 10 in the mathlab and 10 in the lab in the union...

    Ok, now, out of all those computers, a few of them are Macs, a few of them are Linux boxes, and a few of them are Win9x boxes. ALL the rest of them run WinNT4 or Win2K. And on all of them (except the Macs), there is some verson of prime95 running. That's a whole lotta P-90 years.

    --
    Furry cows moo and decompress.
  44. The Prime Number Shitting Bear by Joao · · Score: 1

    I wonder how long it would take for The Prime Number Shitting Bear to reach this number... ;)

    1. Re:The Prime Number Shitting Bear by Bobo+the+Space+Chimp · · Score: 1

      I left it running for a week once, then closed it without checking what it was up to. It was up to the 500,000's the next day (I think.)

      Anyhoo, presuming it was built using a library capable of arbitrarily large integers, but processing ever more slowly, one wonders if advancing computer technology could keep ahead of the curve of what it needed for resources.

      That thing needs to be rewritten to operate at low priority. When it was cranking after days, the whole system (mouse aside) froze for a second or two. Only when actually shitting was it freed up. That's why I closed it.

      Hmmm, I suddenly have an urge to go buy Magic The Gathering cards and hang out at the local Holiday Inn.

      --
      I am for the complete Trantorization of Earth.
  45. The quote by thrillbert · · Score: 2

    "It is better to keep your mouth shut and appear dumb, than to open it and remove all doubt."

  46. Primes are fine and stuff, but check this out by Daath · · Score: 4, Informative

    With these two projects you can help find cures for diseases like Alzheimers, Mad Cow even cancer!

    http://members.ud.com/projects/cancer/
    big project sponsored by university of oxford, NFCR and Intel

    http://folding.stanford.edu/
    Protein Folding@Home - basically the same, much smaller in scale though

    I run the one from UD on my windows desktop, and I run the folding@home client on my linux box :)

    --
    Any technology distinguishable from magic, is insufficiently advanced.
    1. Re:Primes are fine and stuff, but check this out by Anonymous Coward · · Score: 0

      Smaller because one project counts all the users and installs ever seen, and the other seems to count actual active CPUs.

    2. Re:Primes are fine and stuff, but check this out by SIGFPE · · Score: 2
      Oh please! You don't actually believe the hype you read do you? Chemist's can't even explain many of the properties of water, a teeny little molecule. If you think that (1) it is possible to simulate protein folding reliably and (2) there's actually a use for being able to do it then you're being deluded.


      Sorry!

      --
      -- SIGFPE
  47. How far off is #42? by ratguy · · Score: 1

    When they discover that the 42nd Mersenne Prime is actually 6*9, will all life on Earth suddenly cease?

    Ratguy

    1. Re:How far off is #42? by Debillitatus · · Score: 1
      When they discover that the 42nd Mersenne Prime is actually 6*9, will all life on Earth suddenly cease?

      Yes. This is a consequence of Fermat's Last Theorem.

      --

      Come on, give it up, that's

  48. EFF Prize by Big+Nate · · Score: 2, Informative

    The EFF webpage says that the big prize ($100,000) is to be awarded for a 10,000,000+ digit prime, so the $100,000 is probably still up for grabs (if you should feel so lucky).

    Granted, "greater than 3,500,000" could mean 10,000,000+ digits, but I don't think so...

  49. Communicating with aliens is not a good idea by Xenophon+Fenderson, · · Score: 1

    Am I the only person on the planet who thinks that it's a bad idea to be sending so much coded E-M and junk hardware outsystem in order to make contact with aliens? Seriously, I think it's a bad idea. First contact could be disastrous not because of any communication failure, but because those we contact are blood-thirsty monsters. We're barely two hundred years into the Industrial Revolution, only 60 years into the space age, and we are all still stuck on this planet. I think we should be hiding from the ETs, not welcoming them with open arms, like a planetful of suckers.

    --
    I'm proud of my Northern Tibetian Heritage
    1. Re:Communicating with aliens is not a good idea by cheezehead · · Score: 1

      I don't know if I agree or not, but it's a valid point. It has been argued that any ET civilization we might contact would likely be far ahead of us technologically, exactly because of the short period that we have been in the technological age. Hostile or not, a civilization that's far ahead of us is likely to be dangerous.

      --

      MSN 8: Now Microsoft even has bugs in their ad campaigns.

    2. Re:Communicating with aliens is not a good idea by mmontour · · Score: 2

      Am I the only person on the planet who thinks that it's a bad idea to be sending so much coded E-M and junk hardware outsystem in order to make contact with aliens?

      Greg Bear's The Forge of God and Anvil of Stars discuss this idea. Ships are designed for stealth, and Bad Things happen to a certain planet whose inhabitants weren't careful to shield their radio transmissions.

    3. Re:Communicating with aliens is not a good idea by Anonymous Coward · · Score: 0

      you are a maniac... who cares!!!! thats the equivalent of being racist... "there are so many muslims in the world, we should all be hiding from them incase they are all blood thirsty saveges"...

      we have NO proof that aliens are hostile, infact, if they are more advanced than us they WOULD REALISE that hostility solves nothing... people like you proove just how primitive we are as a species...

      now shuddup and go back to your startrek movies....

  50. Slashdot editors: Be responsible. by Futurepower(tm) · · Score: 1


    From the Slashdot story posted by Hemos, (Mostly) Confirmed: New Mersenne Prime Found

    pc's [Should be PCs.]

    there fifth result [their]

    money has been awarded [How could this be past tense if the results have not been confirmed?]

    sofar [so far, until now]

    a message send into outer space. " [two mistakes]

    to totally test it out [to test it completely]

    It is one of the characteristics of a young child that he or she only cares about himself or herself. It is one of the characteristics of an adult that he or she is considerate of others.

    It is time for the Slashdot editors like Hemos to grow up and become responsible adults. Every time they post a story with spelling, grammatical, and typographical errors, they make every reader do more work. The errors are especially difficult for the many Slashdot readers for whom English is not their native language.

    Someone who knows English well should edit all stories before they are posted.


    An explanation of how the U.S. got involved in violence: What should be the Response to Violence?

    --
    Bush's education improvements were
    1. Re:Slashdot editors: Be responsible. by RainMan496 · · Score: 1

      Another issue arises regarding the "prize money" when one actually reads the text of the webpage, which specifically states that money will only be awarded to Mersenne primes with more than ten million digits; the one "found" has far less than this.

    2. Re:Slashdot editors: Be responsible. by Pakaran2 · · Score: 1

      Actually, the webpage says that when a large prime is found, a fair amount of money (five grand, IIRC) will go to each discoverer of a prime found before that time.

  51. Negatives are explicitly excluded by recursiv · · Score: 1
    This isn't really why. Negative numbers are excluded from being prime simply by definition.

    Think of it this way:
    If 1 is a factor of -5, then -1 is a factor of 5. But wait! I thought 5 only had two factors!
    The reason is that a prime number is a positive integer which only has two positive divisors.

    --
    I used to bulls-eye womp-rats in my pants
  52. Cure liberalism ! ...Do it for the children by Dave21212 · · Score: 1

    don't forget that the hungersite.org was a FOR PROFIT organization and that the Red Cross is only using 20% of the 9-11 donations to help the victims... Thanks for the link, I will try it, and yes I seem to be writing flaimbait at the same time (I just can't stand inane liberal logic like 'cure cancer' 'save the children')

    --
    "Whoever would overthrow the liberty of a nation must begin by subduing the freeness of speech."--Benjamin Franklin
    1. Re:Cure liberalism ! ...Do it for the children by Tom7 · · Score: 1

      Well, I don't really understand your post, but the RC announced today that it would be donating all of the money to the victims.

  53. I guess they just use a protocol droid... by Dr.+Bent · · Score: 1


    I've always wondered, when they transmit these numbers into space, what encoding/protocol do they use? I mean, it's not likely that an alien race is going to be using ZModem for interstellar communication.

    And if they're just doing something like a series of beeps, that would take a LONG time for a 3.5mil digit number.

  54. I agree and I'm totally good at english by Dave21212 · · Score: 1

    I agree and I'm totally good at english, but this is a relaxed forum and stuff and even though there editors of the stories their mostly quoting stuff from other people who are bad at english to.

    --
    "Whoever would overthrow the liberty of a nation must begin by subduing the freeness of speech."--Benjamin Franklin
  55. other projects by xbrownx · · Score: 1

    What are some other distributed computing projects worth joining and donating cycles to?

    1. Re:other projects by rholland356 · · Score: 1

      There are a lot of medical searches using distributed computing. I think you can find links at Primenet's home, Entropia. Other math searches exist, too.

      Intel even has a distributed computing research effort for some disease or other. It only runs on Windows, though. Dang. http://intel.com/cure/

      That distributed computing startup failed this summer. Their only customer wanted a tool to measure response times at commercial web sites.

      I've done Primenet for a few years now, and it's to the point where the computing demand has outstripped many of my systems. So I've been seeking a more reasonable cause.

    2. Re:other projects by raindr · · Score: 1

      how about searching Intel.com for "cure" !!! It's a cancer drug research application...Dave

      --
      Things Are The Way They Are
    3. Re:other projects by Anonymous Coward · · Score: 0

      There is a long list of projects at http://www.rechenkraft.de
      The page is in German, but the list itself should be understandable to anyone who speaks English.

      GIMPS also has a list of other projects on their main page http://www.mersenne.org

    4. Re:other projects by Anonymous Coward · · Score: 0
      My site, Internet-based Distributed Computing Projects, lists all the known public projects. Take a look there and choose the project that you think is most useful and/or interesting.

      Kirk Pearson

  56. oops, wrong web site by Anonymous Coward · · Score: 0

    I thought this was a community. It would seem it is academia (the same academia that puts more into the gramar of its papers and theories than the actual content, much less validity from logical deduction of FACTS)

  57. But it has to be a Merseinne Prime by moogla · · Score: 1

    Written in the form 2^k - 1, where k is also a prime number. They don't know if you can keep making these. There's no proof that an infinite number (or any finite bounded number) exists. They just find them by testing.

    --
    Black holes are where the Matrix raised SIGFPE
  58. Quick question.... by Anonymous Coward · · Score: 0

    I'm not familiar with these primes but are they dependent on a decimal counting system? If so, what if ET doesn't use base 10?

    1. Re:Quick question.... by RainMan496 · · Score: 1

      Primes are independent of base systems. Thirteen is prime whether you write it as "13", "D" or "1101." A small amount of arithmetic could verify this.

  59. Why GIMPS may be "better" than SETI by Toliaro · · Score: 0

    GIMPS methods have already discovered Mersenne primes; experts agree on the technique, and positive results are verifiable. SETI positives are subject to interpretation, have not found any ET's yet, and are not verifiable. Not that it matters, but new primes haven't changed anyone's view of man's place in the cosmos, while SETI hits will be attacked as "theoretical" by religious fundamentalists. BTW, neither GIMPS nor SETI are used to produce advances which can be kept from humanity via intellectual property legislation, unlike distributed processing efforts supporting drug discovery and the like.

    --
    Cheers, Toliaro
  60. What if our number is off by one? by Jeppe+Salvesen · · Score: 1

    Will they laugh at our miserable coding skills?

    --

    Stop the brainwash

    1. Re:What if our number is off by one? by Tom7 · · Score: 2


      If the number is off by one, it will trivially not be prime as it will be divisible by 2. ;)

      Also, transmitting this number in binary is rather simple, since it is just a series of 1s!

  61. Some algebraic number theory... by Debillitatus · · Score: 2, Informative
    while(MATHGEEK){

    Actually, it turns out that negative numbers are prime, mathematically. It works like this. Anytime you have a "ring" of objects (think of ring as set of objects where you've defined addition and multiplication), there are special elements of that set called "units". These are the elements in the ring which you can divide by, and stay in the set. For example, for the regular integers, the units are 1 and -1. In particular, 2 in not a unit because if you divide by 2, you don't get integers any more.

    The way primes are defined in mathematics is that you say that a number is prime if it can only be divided by a unit, or, equivalently, p is prime if, whenever p divides ab, then p must divide either a or b. It is an easy theorem to show that a unit multiplied by a prime is also a prime. Thus, whenever n is prime, then so is (-n).

    So, mathematically, it is more appropriate to say that -5 is prime just like 5 is. Of course, it is taught differently in elementary schools, where we say that a prime is positive integer which only has factors one and itself, but this is actually not quite correct.

    Now, of course, a reasonable question is why would we consider primes of sets other than the integers? First, it turns out that the definitions, and most of the theorems, of number theory hold in any ring, i.e. any set with both an addition and a multiplication. It's a nice generalization to deal with other sets. Second, it is also practically useful if you're trying to prove things for regular integers also. Unfortunately, the examples for this are a bit too complicated, but trust me, this notion is useful.

    }

    --

    Come on, give it up, that's

    1. Re:Some algebraic number theory... by colmore · · Score: 1

      Abstract algebra is the coolest. This settles it, bye bye Comp Sci. Austere mathematics, with her 4000 year history is calling me.

      --
      In Capitalist America, bank robs you!
    2. Re:Some algebraic number theory... by Debillitatus · · Score: 1

      Well, there's a lot more where that came from...:)

      --

      Come on, give it up, that's

  62. Just how are these numbers "verified"? by imrdkl · · Score: 2
    I guess a good percentage of the readers have studied Eratosthenes of Cyrene, or at least his so-called "Sieve" to calculate primes. I'm wondering if anyone can outline how these larger numbers are found and validated?

    Big karma for some lucky geek, no doubt.

    1. Re:Just how are these numbers "verified"? by uigrad_2000 · · Score: 2, Informative

      It's pretty easy. Believe it or not, the method to check whether they are primes or not involves FFT's. This means that integers are turned to floats to make use of the newest instructions available to processors today. Then, they are turned back to ints at the end of each iteration. Some checking is done to verify that nothing was lost in the rounding.

      If something is lost in the rounding, the next person who does the check will find it. When they start the first iteration, a random seed is picked. At the end, the seed is "subtracted" from the residue. The residue will exactly match the residue from the first person who ran the primality test.

      The float-to-int rounding error would cause the two testers to have entirely different residues. Also, there is no way to create the residue except to run the full primality test.

      Of course, I should be referring you to the official FAQ's. But they're crappy.

      If you want a good faq about the math of the system, read the mailing list FAQ's. These are much more interesting.

      --
      Free unix account: freeshell.org
    2. Re:Just how are these numbers "verified"? by imrdkl · · Score: 1
      I'm guessing the moderators are long gone, but if you would have quoted just a teeny-bit from the faq:

      Q2.1: How can we prove these massive numbers are prime?
      A: We can use a method known as the Lucas-Lehmer (LL) test. It works like this: For odd p, the Mersenne number 2^p-1 is prime if and only if 2^p-1 divides S(p-1) where S(n+1) = S(n)^2-2, and S(1)=4

      I'll bet they would have been even more impressed... It would have answered my question directly, and would have been one of the most on-topic bits in this thread. Sigh. But thanks, the faq itself was better.

    3. Re:Just how are these numbers "verified"? by smaughster · · Score: 2

      Actually, the methods they use to check the primes is not related to float arithmic. They use fast fourier transforms to speed-up the squaring required in the LL algorithm, with additional bonus that this FFT automatically performs the mod calculation.

      What one general idea behind prime checking is that there are several theorem's that you can use to show that a number is (probably) prime without checking all factors or using Erastostenes sieve. A few are given in faq: Q3.3. I believe one of those theorem's is Fermat's little theorem. These are not used in this program. Instead they use the LL test, based upon "For odd p, the Mersenne number 2^p-1 is prime if and only if 2^p-1 divides S(p-1) where S(n+1) = S(n)^2-2, and S(1)=4". The Fast Fourier transforms are used to calculate the S(n) with the modulo 2^p-1 part as a bonus.

      --
      I intend to live forever, so far so good.
  63. Ironic by Anonymous Coward · · Score: 0

    It is ironic that just last week they sent out their first newsletter in about 2 years. It basically said "we haven't found anything in a while, but let's keep plugging away!". One week later they find a mersenne prime.

  64. Celebration on mailing list by uigrad_2000 · · Score: 1

    I get the "digest" form of the mailing list. Here's what I just received this afternoon:
    My mirror of the digest

    --
    Free unix account: freeshell.org
  65. Distributed works, SETI doesn't by fobbman · · Score: 2

    It's great to see that Distributed.net is getting some work done. SETI's been around for years and they haven't found squat, which is particularly alarming since the damned things were given prime-time showings on CBS last night as well as releasing a new CD.

  66. Why is distributed.net so popular? (+ others) by Tom7 · · Score: 2

    Yeah.
    I've got to say that I'm disappointed in how popular distributed.net RC-5 cracking is. What the hell is the point? The only reason we don't have the key is because they destroyed the hard drive from the computer that generated it. It's easy to calculate how long it would take to find a solution by brute force (which is what they're doing) without actually wasting all of those cycles.

    SETI@home seems rather like pseudoscience to me (And without source, I wouldn't be surprised if it's a secret plot from the NSA ;)), though I suppose this is a kind of fun one. At least we don't already know the answer.

    I like GIMPS (we are at least learning something new and the results are easily verifiable), though the bio ones you mention are also very neat. Let's hope that more useful projects come out of this idea...

  67. GIMPS milestones by uigrad_2000 · · Score: 2, Informative

    The Great Internet Mersenne Prime Search keeps all the large milestones here:

    http://mersenne.org/status.htm

    They haven't added #39 yet, but they probably will by the end of the day!!!

    --
    Free unix account: freeshell.org
  68. so what is it? by kahuna720 · · Score: 0

    could someone post the number here please??

    --
    props to all dead homiez
    1. Re:so what is it? by RainMan496 · · Score: 1

      The number itself, being millions of digits long, is obviously too large to show here, but it can easily be expressed in the form (2^p)-1, where p is some prime number, probably in the tens of millions.

    2. Re:so what is it? by Pakaran2 · · Score: 1

      And, for that matter, the exact prime number has not been released yet, pending verification.

  69. Submitter of the story doesn't understand. by uigrad_2000 · · Score: 1

    There are lots of reasons for joining primenet. Finding ET life is not one. It's more about discovering the beauties of mathematics than anything else.

    As one whose been on this project for nearly two years, and has contributed 11.197 years of computational time into it, I feel as if I'm a large part of the project. In fact, there are only 1500 accounts higher than mine in the ranking.

    If I was looking for the best way to reach E.T., I would have joined SETI. Saying that our goal is to find E.T. just because SETI is so popular is a big insult. I'm sure 1480 of the 1500 people ahead of me would agree.

    --
    Free unix account: freeshell.org
  70. Let's go. Right now. by uigrad_2000 · · Score: 1

    All of these distributed projects reach into medical research and are as such a bit more useful than searching for ET [berkeley.edu] or cracking RC-5 [distributed.net].

    Amen brother! Let's go to battle. I'll stack up our 4 prime number discoveries against anything you SETI people have found anyday!

    No apologies here! I'm all for starting a flame war. May the most productive way to waste time win... and all that crap!

    --
    Free unix account: freeshell.org
  71. Not necessarily by image · · Score: 2

    You claim that any being advanced enough to notice our signals would be sufficiently advanced to understand at least some math.

    Not necessarily. For example, I can observe frequencies in the range between roughly 2x10^1 Hz to 2-4x10^5 Hz (sound), and 4x10^14 Hz - 7.5x10^14 Hz (visible light).

    Please correct me if I'm wrong, but I think SETI is scanning in the 1x10^9 Hz to 1x10^10 Hz range (microwave). This leads me to assume that we are hoping that any alien beings are sending (and presumably listening for) signals in this range.

    Would it be a stretch to imagine those alien beings having the ability to directly sense microwaves, similar to our ability to see and hear?

    Since even a human child can see without knowing even basic math, perhaps our alien observers would be in the same situation.

    Just a thought.

  72. The $100k prize by Anonymous Coward · · Score: 0


    There giving away $100k to find a stupid number. Last time I checked $100k would buy a lot of Lawyer time. I'm glad I don't donate to EFF

    1. Re:The $100k prize by RainMan496 · · Score: 1

      Not only do you ignore correct diction regarding "they're", you also overlook mankind's duty to push the limits of mathematics. The discovery of this number adds data to an extremely small list. Who knows what amazing theories will be made as more data is collected from similar research projects?

    2. Re:The $100k prize by Anonymous Coward · · Score: 0

      "Prize money comes from a special donation provided by an individual EFF supporter, earmarked specifically for this project. Prize money does NOT come from EFF membership dues, corporate or foundation grants, or other general EFF funds." (http://www.eff.org/awards/coop.html)

  73. My (pseudoscientific) theory by Anonymous Coward · · Score: 0

    Your stupid rant was only mildly vomit inducing until you started to talk about 'transcending' and 'beings of pure energy', and finally the knockout blow, 'super-powerful beings looking down on us', a clear god-metaphor. Go hand out bibles and your phone number to schoolchildren, faggot.

    1. Re:My (pseudoscientific) theory by Anonymous Coward · · Score: 0

      Believe me, I am not talking about a God in a sense any religion knows it. But, as someone else pointed out, there might not be much of a difference from our perspective. We aren't gods, but to some ants we keep in a little plastic container we probably seem like them(if they know we exist at all).

      Anyway, about the only way to stop this from happening would be the destruction of the human race, so I don't really care whether you believe it or not. Within 50 years we will probably be able to see the event horizon, if we haven't passed through already.

      BTW, "mildly vomit inducing," "faggot"... not very creative. Try to come up with something better next time.

  74. Ignorance? by Bartman69 · · Score: 1
    Call me paranoid, but should we be revealing how much/little we know to ET?

    ET1: The earthings only recognize - get this - 38 Mersenne prime numbers!!!

    ET2: Prepare the battle cruisers.

  75. Seti is stupid and pointless, Why waste resources? by HanzoSan · · Score: 1, Troll



    Why not cure cancer? aids? anything?!?!? but sending radio signals to aliens in space is just plain stupid and a waste of time.

    First of all, if you are looking for "intelligent" life, meaning more intelligent than us, chances are they will find us first, we wont have to search for more advanced life.

    And primitive life? well they wouldnt have the technology to respond to radio signals, so what Seti really is searching for is human like life, on exactly the same technologicial level as us, the chances of finding this is 1 in billions literally do the math here.

    So what is seti? A waste of time, and its equal to shouting in the jungle hoping you'll make friends with some wild animals, when in reality, none of them understand you and only run away from you, or attack you.

    Like I said, theres much more important things to worry about than soundwaves in space and finding some aliens which may or may not be friendly and which are mostly as stupid as us.

    Whats the point? If anyone can give me one reason why to donate resuorces to seti instead of the cancer cure research or aids cure, I'll give you a prize!

    --
    If you use Linux, please help development of Autopac
  76. Why not HELP people, this is a waste by HanzoSan · · Score: 1, Troll



    Its as much of a waste of resources as is running a pathetic benchmark program on your machine for days at a time just so you can have bragging rights.

    Come on people, use these resources to cure cancer or something.

    Seti is POINTLESS, even Seti knows Seti is pointless ,they only do it because they get paid to do it, and because people are dumb enough to give up free resources to them.

    Think about this, the search for intelligent life, with such pathetic technology as radio, please!! as if any alien would respond? Would we even respond if we started seeing alien signals in our crops? hell no we'd call it a hoax!!

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  77. That is why Seti is pointless by HanzoSan · · Score: 2



    The search for intelligent life? Ok lets say aliens saw our radio signals, either they'd laugh at us as we laugh at monkeys in the zoo, or they'd enslave us.

    Really we dont want either of these situations ot happen, but really you make a good point, with nano technology and say brain to computer interface and AI, we wont be anything like what we are now, we will most likely be meta physical, most likely be able to transofrm matter into anything we want, most likely have telepathy via advanced communications technologies. If this is us in a few hundred years, then if we are looking for aliens that are millions of billions of years old, chances are they already know where we are and what we are doing and are laughing at us right now.

    Think about it, anything thousands or millions of years more advanced than us would be like gods to us, literally.

    Hopefully we dont end up attracting evil aliens who want to turn us into their pets ,slaves, or put us in zoos like we do monkeys and wild animals. But hey, thats the chance you take when you waste time with Seti and give aliens a complete map to the solar system (as if they dont already have one) and give aliens our DNA (thats the dumbest possible idea every thought of)

    Giving aliens our DNA means, any group of aliens can simply use our DNA to look exactly like us and blend into our population and we would have no way of knowing it

    of course idiots at seti and other fools who send stupid probes into space without thinking first, believe aliens will be as dumb as us and havent mastered what we dont understand.

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    If you use Linux, please help development of Autopac
    1. Re:That is why Seti is pointless by Anonymous Coward · · Score: 0

      either they'd laugh at us as we laugh at monkeys in the zoo, or they'd enslave us.

      You go to the zoo to laugh at the monkeys? You must be a real loser.

  78. Well we also gave our DNA to them by HanzoSan · · Score: 2



    Not only our DNA but maps to the solar system,

    what kinda stupid idiot species gives out their own DNA and a MAP to their planet.

    Ok walk into a dark alley and leave a knife, and a note saying where you live.

    What are your chances that some killer is going to find this and walk right in your door and stab you?

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    If you use Linux, please help development of Autopac
    1. Re:Well we also gave our DNA to them by Bobo+the+Space+Chimp · · Score: 1

      "It would be like us going out of our way to destroy some microbes on an anthill in Afghanistan."

      --
      I am for the complete Trantorization of Earth.
  79. strength of signals by Goonie · · Score: 2
    Would it be a stretch to imagine those alien beings having the ability to directly sense microwaves, similar to our ability to see and hear?

    No, that's entirely reasonable, but at any realistic range the signal is so weak that you'd need a bloody great big dish to concentrate that signal enough to "hear" it. I find it somewhat implausible that there are creatures that have evolved into radio telescopes :)

    If they can construct a radio dish (even if they just use it like a reflecting telescope to shine the radio waves into their microwave "eyes" they'd presumably have to know at least a little geometry.

    --

    Any sufficiently advanced technology is indistinguishable from a rigged demo
    --Andy Finkel (J. Klass?)
  80. Well, that's really not the point by Knara · · Score: 1

    The point is that someone will pay attention if they suddenly get a string of numbers that is definitely non-random.

    We'll save the formal introductions for later. As informal beginnings go, mathematics is probably the least-likely to get us incinerated on accident, I'd think.

    1. Re:Well, that's really not the point by czardonic · · Score: 1

      Well, you got me. I honestly know next to nothing about mathematics. It seems to me that unless you know that the number is prime, it would seem pretty random. Considering the amount of time it took us to figure out this particular number, it doesn't seem like it would be terribly obvious to anyone receiving it.

      --
      Takahashi Rumiko made beats! DON, taku, DON, taku. . .
    2. Re:Well, that's really not the point by vectro · · Score: 1

      Don't forget: It may have been hard to find this number, but verifying the primeness of any particular number is fairly easy.

  81. Selfish person alert by Anonymous Coward · · Score: 0

    Personally, I don't see how I can relieve human suffering by letting my computer sit idle, and frankly, I think of it as just a screensaver that's helping someone out.

    I'll probably download Folding@Home, because frankly, I'm looking for the most artistically interesting one. So I don't have morals or compassion for the human race. So what? Have any of you thought what would happen if, say SETI@Home found something, and we got into a war with an alien species? We'd probably get our @$$e$ kicked, because we were too busy infighting and not concentrating on the task at hand (Starcraft's plot is kinda like this).

    Of course, the whole 'Folding@Home looks like a good screensaver' thing might appease all of those people who want me to think of the children.

  82. but.. by Anonymous Coward · · Score: 0

    Will they be able to find the Blue Faery?

  83. Re:Seti is stupid and pointless, Why waste resourc by RainMan496 · · Score: 1

    If you can figure out a way to cure cancer using wasted CPU cycles, I'll give you a prize! Do we have a deal? Sarcasm aside, if there truly is a way to do this, it indeed should be our first priority, but, correct me if I'm wrong, there is not. In the event that there is a way, it should definitely be a bigger deal than anyone is making it.

  84. Re:Seti is stupid and pointless, Why waste resourc by Anonymous Coward · · Score: 0

    i wish i had read all the previous posts before this, heheh

  85. 38th or 39th? by RainMan496 · · Score: 1

    I have been unable to find exactly what the "new" prime is, and was wondering if it fell between the current 37 and 38. If it did, it would be only the 38th, and the "old" 38 would be the "new" 39.

    1. Re:38th or 39th? by Anonymous Coward · · Score: 0

      The exact number will not be published until it has been verified in a double check, but George Woltman says it has >3500000 decimal digits which makes it larger than the currently known #38.

  86. Slashdot philosophy hour by greenplato · · Score: 1

    Our number system, our mathematics, and our primes may not be universally understood. They may merely be a convenient convention that we have constructed to make some sense out of our surroundings.

    To blockquote Robert Pirsig from Zen and the Art of Motorcycle Maintenance:

    [Astronomer, physicist, mathematician, and philosopher Jules Henri] Poincaré concluded that the axioms of geometry are conventions, our choice among all possible conventions is guided by experimental facts, but it remains free and is limited only by the necessity of avoiding all contradiction. Thus it is that the postulates can remain rigorously true even though the experimental laws that have determined their adoption are only approximative. The axioms of geometry, in other words, are merely disguised definitions....Geometry is not true, it is advantageous.... Our concepts of space and time are also definitions, selected on the basis of their convenience in handling the facts.

    Sentient beings on another planet may have other constructs that work just as well for them, and are as rigorously true as ours -- only more convenient for their circumstances. Imagine how a two dimensional critter has a different idea of space than a three dimensional critter. Neither is wrong or right, only less or more useful to the beholder.

    Perceptual differences will result in different interpretations of truth. One system's prime may be another system's non-prime.

    1. Re:Slashdot philosophy hour by Anonymous Coward · · Score: 0

      One system's prime may be another system's non-prime

      5 = (2+i)*(2-i), so it is not prime. What were they thinking!

  87. what a Mersenne prime is by vrmlknight · · Score: 0, Redundant

    ok i had to look it up a smiple search on google dont think that this as a troll just trying to help those that dont use google
    http://www.utm.edu/research/primes/mersenne.shtm l:

    "Many early writers felt that the numbers of the form 2n-1 were prime for all primes n, but in 1536 Hudalricus Regius showed that 211-1 = 2047 was not prime (it is 23.89). By 1603 Pietro Cataldi had correctly verified that 217-1 and 219-1 were both prime, but then incorrectly stated 2n-1 was also prime for 23, 29, 31 and 37. In 1640 Fermat showed Cataldi was wrong about 23 and 37; then Euler in 1738 showed Cataldi was also wrong about 29. Sometime later Euler showed Cataldi's assertion about 31 was correct.
    Enter French monk Marin Mersenne (1588-1648). Mersenne stated in the preface to his Cogitata Physica-Mathematica (1644) that the numbers 2n-1 were prime for

    n = 2, 3, 5, 7, 13, 17, 19, 31, 67, 127 and 257
    and were composite for all other positive integers n 257. Mersenne's (incorrect) conjecture fared only slightly better than Regius', but still got his name attached to these numbers.
    Definition: When 2n-1 is prime it is said to be a Mersenne prime.
    It was obvious to Mersenne's peers that he could not have tested all of these numbers (in fact he admitted as much), but they could not test them either. It was not until over 100 years later, in 1750, that Euler verified the next number on Mersenne's and Regius' lists, 231-1, was prime. After another century, in 1876, Lucas verified 2127-1 was also prime. Seven years later Pervouchine showed 261-1 was prime, so Mersenne had missed this one. In the early 1900's Powers showed that Mersenne had also missed the primes 289-1 and 2107-1. Finally, by 1947 Mersenne's range, n 258, had been completely checked and it was determined that the correct list is:
    n = 2, 3, 5, 7, 13, 17, 19, 31, 61, 89, 107 and 127.

    Many ancient cultures were concerned with the relationship of a number with the sum of its divisors, often giving mystic interpretations. Here we are concerned only with one such relationship:
    Definition: A positive integer n is called a perfect number if it is equal to the sum of all of its positive divisors, excluding n itself.
    For example, 6 is the first perfect number because 6=1+2+3. The next is 28=1+2+4+7+14. The next two are 496 and 8128. These four were all known before the time of Christ. Look at these numbers in the following partially factored form:
    2.3, 4.7, 16.31, 64.127.
    Do you notice they all have the same form 2n-1(2n-1) (for n = 2, 3, 5, and 7 respectively)? And that in each case 2n-1 was a Mersenne prime? In fact it is easy to show the following theorems:
    Theorem One: k is an even perfect number if and only if it has the form 2n-1(2n-1) and 2n-1 is prime. [Proof.]
    Theorem Two: If 2n-1 is prime, then so is n. [Proof.]

    So the search for Mersennes is also the search for even perfect numbers!
    You may have also noticed that the perfect numbers listed above (6, 28, 496, 8128) all end with either the digit 6 or the digit 8--this is also very easy to prove (but no, they do not continue to alternate 6, 8, 6, 8,...). If you like that digit pattern, look at the first four perfect numbers in binary:

    110
    11100
    111110000
    1111111000000
    (The binary digit pattern is a consequence of Theorem One.) It is not known whether or not there is an odd perfect number, but if there is one it is big! This is probably the oldest unsolved problem in all of mathematics.
    When checking to see if a Mersenne number is prime, we usually first look for any small divisors. The following theorem of Euler and Fermat is very useful in this regard.

    Theorem Three: Let p and q be primes. If q divides Mp = 2p-1, then
    q = +/-1 (mod 8) and q = 2kp + 1
    for some integer k. [Proof.]
    Finally, we offer the following for your perusal:
    Theorem Four. Let p = 3 (mod 4) be prime. 2p+1 is also prime if and only if 2p+1 divides Mp. [Proof].
    Theorem Five. If you sum the digits of any even perfect number (except 6), then sum the digits of the resulting number, and repeat this process until you get a single digit, that digit will be one "

    --
    This must be Thursday, I never could get the hang of Thursdays.
  88. Gauss Primes by IntelliTubbie · · Score: 2

    The Gauss integers (denoted Z[i]) are a neat example of an alternative ring that has interesting implications for ordinary number theory. A Gauss integer is a complex number a+bi for which a and b are both integers.

    Not all integer primes are Gauss primes: for example, 5 is a prime in the integers, but in the Gauss integers 5 = (2+i)(2-i). In fact, you can show that a prime p is also a Gauss prime if and only if p=3 mod 4, and otherwise p is the product of 2 complex conjugate Gauss primes (a+bi)(a-bi). This relates to the fact in normal number theory that any 1 mod 4 prime is expressible as the sum of 2 squares.

    Cheers,
    IT

    --

    Power corrupts. PowerPoint corrupts absolutely.

  89. What's the number? by pomakis · · Score: 1

    Does anybody know what the number actually is? And isn't it a bit odd that it hasn't shown up as news on either the GIMPS Home Page or the PrimeNet Home Page yet?

    1. Re:What's the number? by Pakaran2 · · Score: 1

      The number hasn't been announced on the webpages because it has yet to be verified (for example, there could be a bizarre bug in the testing software, or someone might have learned to forge a "this number is prime" signal to the server).

      It has only been announced on the GIMPS project mailing list, and it looks like someone from that list prematurely submitted the story to Slashdot.

  90. dont be stupid by HanzoSan · · Score: 1



    200,000 lightyears away is assuming these beings are limited to physics like we are, what if they have complete control of time space and matter? Then we'd be amusement for these ETs

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    If you use Linux, please help development of Autopac
  91. I never said I did by HanzoSan · · Score: 1

    If people go cow tipping, they race dogs around tracks, they fight dogs, all for amusement, why cant aliens do the same to us?

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    If you use Linux, please help development of Autopac
  92. Somewhere, in deep space... by Anonymous Coward · · Score: 0

    "Oh fuck. Those stupid humans are sending us another one of their primitive 'prime numbers'. Give it a rest you galactic radio-grafitti artists!"

    1. Re:Somewhere, in deep space... by Bobo+the+Space+Chimp · · Score: 1

      "Oh, lookie! More apes offering up their cave paintings to the gods. More infants saying, 'Lookee mommy at my fingerpainting!' More children fishing for compliments about their creativity in wrapping a twist tie around their finger."

      --
      I am for the complete Trantorization of Earth.
  93. Kindly ignore this post. by Anonymous Coward · · Score: 0

    http://network54.com/Hide/Forum/80065
    Gaming forum anonymous

  94. There is no such thing as a "truth" by HanzoSan · · Score: 1



    What we believe is true, is simply our best way of understanding something, but our limited senses of sight, hearing, smell and so on, limit us into what we can judge as true.

    something which can see in 2d, we believe to be real, correct? What about things which we cant see,

    If we see in 2d, we only see one side of an object, what about the other 2 sides? we can use math to predict and find the length of whats on these other two sides, but theres no way we can ever SEE whats on the other 2 sides.

    Now consider this, an alien species which isnt even from this dimension, it would see from all sides, all angles, all at once, its view of the world would be TOTALLY diffrent than ours, its technology would be TOTALLY diffrent, and if we ever met up with such a force, we wouldnt even know its there, yet it would know exactly where EACH and every single one of us are.

    So what we see as true, is only true in our OWN eyes, what something more intelligent sees as true, is true in its eyes as well as in our eyes.

    Get it? An alien life form which has evolved beyond our dimension or which is simply beyond our dimension, can in theory see everything from every angle, if we met them we'd think God was talking to us, we'd here a voice come from the sky which simply speaks to us and because we are so stupid we may even worship this voice, write bibles and so on.

    When That could have been first contact and we never realized it.

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    If you use Linux, please help development of Autopac
    1. Re:There is no such thing as a "truth" by Anonymous Coward · · Score: 0

      just a tip: lay off the acid buddy...

  95. I hope they get it soon! by Erris · · Score: 1
    Thanks, got it, running it, but I have my worries about the authors. Specifically, their license is strangly restrictive and no source is available. How do I know what it is really doing? While it only has my user privalidges, it might use them to exploit some known flaw to elevate itself. In any case, the decision to withhold useful information from the world at large makes me worry about the intentions of the copyright holders:

    TINKER: Software Tools for Molecular Design
    Version 3.8 October 2000
    Copyright (c) Jay William Ponder 1990-2000
    portions Copyright (c) Michael Shirts 2001
    portions Copyright (c) Vijay S Pande 2001

    What gives? Why so tight guys? Your attitude might get you through now, but the increasing awareness of computer security and user rights will leave you with few clients. It's strange to expect strangers to do things for you when you are not willing to share something so small as a distributed client source code.

    That said, my machine will be sending results anyway. Better that they are used before they hit the scrap heap.

    --
    DMCA, Hollings, Palladium. What might have sounded like paranoia is now common sense.
    1. Re:I hope they get it soon! by tvm662 · · Score: 1

      I think that the licence is more to do with protecting their work rather than denying you rights. If you had the source code then they would have no control over the experiment, which would make it worthless and unlike seti@home the work that your computer does has an effect on the work that is done by all of the other computers in the project.(Because of the way they are using multiple short simulation runs to simulate one long run)

      Any scientist who didn't control their experimental conditions, and tried to pass off there work as valid, wouldn't be a very good scientist would they? They would just have wasted everyones generously given cycles for nothing.

      Tom.

    2. Re:I hope they get it soon! by Erris · · Score: 1
      If you had the source code then they would have no control over the experiment, which would make it worthless and unlike seti@home the work that your computer does has an effect on the work that is done by all of the other computers in the project.

      I have to dissagree. You assume that there is no other way for a malicious party to send bogus information. This is not true, so other means must be used to verify the integrity of the answers, such as registration and agreement. The server should remember what machines it has distributed code to and this would form a registration. This breaks down for large networks behind a firewall, so the same information must be sent to different machines. Agreement between different clients is reassuring. Answers that dissagree can be checked by the researchers themselves and bogus answers can be rejected in the future. The internet is not to be trusted any more than strangers are. If they don't know that, their answers are not to be trusted.

      These guys are not sharing their work because they don't want to right now. As I said before, that's an odd position to beg from.

      I got 5 of 100 frames done before I left work yesterday and had to close the connection used to start the work. I bet my spare machine can finish the rest over the weekend.

      --
      DMCA, Hollings, Palladium. What might have sounded like paranoia is now common sense.
    3. Re:I hope they get it soon! by tvm662 · · Score: 1

      You have to remember that these guys are chemists not computer scientists. Maybe there is a way of providing some authentication, but I can't think of one. The thing is how to tell if a returning piece of data has been processed in the correct way. If someone changed some of the parameters in the code then the results would not be right.

      The multiple runs aren't identical runs they are different runs of the same problem. Basically what they are trying to do is search the multidimensional hypersurface that belongs to the protein in question to find how the protien folds, which energy minima it visits and which minimum it eventually ends up in. They start in an unfolded state and use molecular dynamics (MD) or Monte Carlo (MC) (I can't remember which) to look for minima. Instead of having one long simulation run they send out lots of different runs going in parallel on different computers in the project. When a new minimum is found all of the runs stop what they are doing and jump into that minimum. Due to some complex mathematics and science (the ergodic principle I think) these shorter runs add together in this way to produce results the same as one long run. Because all of the runs are different they cannot be checked against each other.

      If there was a way to allow some sort of authentication and have the source code available that would great. After all the tinker code is available and the distributed computing code is available, so they have no reason to hide the code.

      What OS are you running? If your running on unix or linux create a "folding_at_home" user with their own group and run it as them so that it can't do any harm. Just a thought.

      Tom.

  96. Other Big numbers by Anonymous Coward · · Score: 0

    1,000,000,000 Hours ago: The dawn of man
    1,000,000,000 Mins ago: The Dawn of Christianity
    1,000,000,000 Cokes ago

    Yesterday Morning

  97. Its called science by HanzoSan · · Score: 1



    Perhaps all of our scientists are on acid, because i got it from them

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