The book is now available! 735
(another Prime Pages' Curiosity)
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2^735+735 is a prime. Note that 735 is the only 3-digit composite number n such that 2^n+n is a prime. [Loungrides]

 

  Submitted: 2009-12-10 12:49:28;   Last Modified: 2009-12-10 17:08:20.



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