The book is now available! 1918
(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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1918 is the only known number m such that both 111^111 - m and 111^111 + m are primes. [Firoozbakht]


  Submitted: 2004-10-31 10:30:43;   Last Modified: 2008-01-30 11:28:00.

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