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83,431 Recited Digits of Pi

i_like_spam writes "59-year-old Akira Haraguchi of Japan recently broke the world record for the recited number of digits of Pi. Haraguchi-san recited an amazing 83,431 digits of Pi during a 13-hour overnight stretch. This almost doubles the previous record of 42,195 digits by fellow Japanese Hiroyuki Goto. Though it is not yet updated to reflect the new record, the Pi-World-Ranking-List has the rules for participation and breaks down the ranking by world, continent, and country. Links to world rankings for memorized digits of E and Sqrt(2) are also given."

3 of 433 comments (clear)

  1. Miscalculation? by Adrilla · · Score: 4, Informative

    Haraguchi-san recited an amazing 83,431 digits of Pi during a 13-hour overnight stretch. This more than doubles the previous record of 42,195 digits by fellow Japanese Hiroyuki Goto.

    Um, I'm not a math major, but since when is 83,431 > 84,390, which is double the amount of 42,195? You don't even need a calculator to figure that one out. But as far as the accomplishment goes: That's a simply amazing feat, I applaud Haraguchi greatly, How do you memorize a number that deep, I can barely remember what I had for breakfast.

    --

    "Plans are for fools! Oglethorpe, the plutonian (Aqua Teen Hunger Force)
    1. Re:Miscalculation? by i_like_spam · · Score: 5, Informative

      To set the record straight...

      ...as a mistake, I initially typed '84,431', which more than doubles the previous record. After finding and correcting my numerical mistake, I forgot to change 'more than doubles' to 'nearly doubles'. Oops.

    2. Re:Miscalculation? by Anonymous Coward · · Score: 5, Informative

      No. They reiterate a formula in their head.

      http://mathworld.wolfram.com/BBPFormula.html