The book is now available! 604
(another Prime Pages' Curiosity)
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604 is the only three-digit number whose sum of its single and double factorials plus one is prime. I.e., 604! + 604!2 + 1 is prime. [Opao]

 

  Submitted: 2003-11-06 00:03:47;   Last Modified: 2008-01-30 11:28:00.



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