The book is now available! 31
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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pi(pi(pi(pi(31))))=2 is prime, pi(pi(pi(31)))=3 is prime and pi(pi(31))=5 is prime. [Olsen]


  Submitted: 2001-12-13 17:07:23;   Last Modified: 2008-01-30 11:28:00.

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