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Prime Numbers Not So Random?

Jeff Moriarty writes "Some physicists believe they might have caught a whiff of a pattern in the sequence of prime numbers. This would have a huge impact across mathematics, and to people who just really like primes... or like being Prime."

4 of 147 comments (clear)

  1. Encryption? by asdfx · · Score: 3, Informative

    I wonder if this theory could be used to produce code that could be useful for encryption based on prime numbers, such as RSA's work. Would it make it easier to produce reliable prime numbers much larger than 1024 or even 2048 bit? Further, I wonder if this could be used to drastically reduce the time required to brute force an RSA encrypted message. Could the encryption of files that were encrypted with 128 bit technology be rendered all but useless?

  2. Re:anyone else getting the feeling... by Scarblac · · Score: 3, Informative

    You've "easily" proven things by defining them as something. An irrational number is a number with no known, infinite, repeatable sequence? You've *defined* it that way, that doesn't mean you've ever *proven* a number irrational.

    Proof that the square root of 2 is irrational: http://everything2.com/index.pl?node_id=928307

    Proof that e is irrational: http://everything2.com/index.pl?node_id=930313

    Better examples are obviously out there, but I just searched for 'irrational' on E2... You're very ignorant.

    --
    I believe posters are recognized by their sig. So I made one.
  3. Re:Here's the rub by Anonymous Coward · · Score: 3, Informative

    They don't claim that they have a rule that can create prime numbers, they just claim that prime numbers might not be completely random.

    Just like if you have a large prime p, p+210 is 4.375 times more likely to be a prime than a random integer around p. Not a rule, but a hint that primes aren't so random.

  4. Re:Physicists pulling a cold fusion? by l2718 · · Score: 3, Informative

    As a number theory graduate student, this looks suspicious. This isn't as bad as last summer, when some string theorists claimed a junk
    proof of the Riemann Hypothesis, but it's close.

    Prime numbers are very hard to tackle. Part of the difficulty in this style of problem, as another post points out, is that they are defined multiplicatively, and yet we here care about additive properties (differences in this case).

    I have a few concerns with this paper:

    1. They look at a really small number of primes (only 10^7 of them). Many false conjectures have been made that way. The most famous case is with the prime number theorem: it's known that up to x there are about x/log(x) primes, and as x grows this estimate becomes more and more accurate. If you do some tests you'll quickly see that there are more than x/log(x) primes up to x for all x you can test for. This was conjectured to be true for all x, until someone proved that actually the difference (# primes up to x) - x/log(x) changes sign infinitely often. The first change is known to happen before x=10^370 -- but try testing that.

    2. They use the ansatz Alog(log(x))+B to fit some function of x (the entropy). But for x in the range of concern (at most 10^8), log(log(x)) is essentially constant. Try graphing that function and you'll see for yourself. For all practical purposes (i.e. unless you can run your computer up to numbers like 10^100), doing curve fitting with this function is very suspicious.

    My take,
    Lior