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April 2, 2009

Boredom helps

devadutta @ 8:35 pm, GMT +0000 ( 1238704533 ) Play

What is this?

50045d62bf63cefcb6373a31e620b40e

A bigger version of it shrunk to fit the screen

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Cracked by: Jean Valjean , foobar , emrohit , udupendra , Johny Walker , Vijay Shankar , username , Raghuvansh , Prasad , Srikanth.M.G , p vs np , u2001137 , Sruti , madhur , RajT , sumo_)ftb , 2ndratequizzer , alephnull , Nakul , darthshak , dheeraj , Ananth , Mo , Siddharth Jain , duriel and Rithwik K and Dibyo.

Answer:

Stanislaw Ulam was doodling on a pice of paper when he was bored. The resulting spiral surprisingly establised a pattern for prime numbers.

Thus called the Ulam Spiral.


35 Responses to “Boredom helps”

  1. Ulam spiral


  2. foobar

    Its an Ulam spiral. Its a method of graphing the prime number which shows that prime numbers tend to line up diagonally. (2) shows that this is true even when more numbers are plotted in a spiral.


  3. emrohit

    Ulam spiral


  4. udupendra
    4
    4
    7

    Ulam spiral. Haven’t we asked this before already? At least I am sure I have asked this somewhere.


  5. Ulam Spiral


  6. Vijay Shankar

    Ulam Spiral.


  7. Dibyo
    11
    14
    10

    The prime spiral, also known as Ulam’s spiral


  8. shrik
    10
    7
    9

    The Sieve of Eratosthenes?


  9. shrik
    10
    7
    9

    The Sieve of Eratosthenes as applied to really large number sets.


  10. username
    3
    3
    1

    Ulam spiral
    http://en.wikipedia.org/wiki/Ulam_spiral


  11. piezocake

    :( I didn’t make it to the topper’s list even when all the rest were are 0 too:

    alephnull — 0
    Bipin Banavalikar — 0
    Rahulk — 0
    Raghuvansh — 0
    Dibyo — 0
    udupendra — 0
    foobar — 0
    2ndratequizzer — 0
    Prasad — 0
    Jean Valjean — 0
    darthshak — 0
    Siddharth Jain — 0
    madhur — 0


  12. Density of Prime Numbers


  13. Raghuvansh
    1
    9
    4

    Ulam Spiral


  14. Prasad

    Ullam Spiral.


  15. Srikanth.M.G

    Ulam spiral..
    Graphing prime numbers reveals the pattern mentioned in pic 2 discovered by mathematician Stainslaw Ulam, pic1 is zoom in version of pic2.


  16. p vs np
    1

    Ulam spiral.


  17. u2001137

    ulam spiral


  18. Sruti

    Ulam’s spiral of primes.


  19. madhur
    1

    Ulam spiral


  20. RajT

    Ulam Spiral


  21. prime spiral or ulam spiral


  22. Ulam Spiral


  23. alephnull

    An Ulam spiral. I don’t see the connection with the hint though.


  24. Nakul

    stan Ulam’s prime square spiral


  25. darthshak

    Ulam spiral


  26. dheeraj

    ulam spiral


  27. Ananth
    4
    5
    9

    Ulam spiral or Ulam Cloth


  28. Mo

    Ulam spiral


  29. Siddharth Jain
    1

    Ulam Spiral


  30. duriel
    1
    1
    2

    Ulam spiral


  31. @piezocake: idiyallo score 0 anta.. where were you looking?

    Also, you will get a 0 only if you have atleast attempted a question.. those who have not attempted cannot be given points.. alwa :)


  32. Rithwik K

    Ulam Spiral


  33. @udupendra: No we have not asked this before..


  34. Dibyo
    11
    14
    10

    Hey I got this right, how come I don’t get any points? Is this some sort of April Fools joke?


  35. @Dibyo: Sorry sir. Fixed :)


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