The book is now available! 61
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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61 is the smallest base b for which the generalized repunit ((b^37)-1)/(b-1) is prime.


  Submitted: 2008-10-03 06:47:09;   Last Modified: 2008-10-05 16:41:33.

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