The book is now available! 257
(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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257 = prime(|2 - 57|). It is the only Fermat prime with this property. [Firoozbakht]


  Submitted: 2009-12-24 18:08:36;   Last Modified: 2009-12-27 13:24:12.

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