The book is now available! 31139
(another Prime Pages' Curiosity)
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31139 = (pi(3!) + pi(1!) + pi(1!) + pi(3!) + pi(9!)) + (pi(3!2) + pi(1!2) + pi(1!2) + pi(3!2) + pi(9!2)). Note that prime 31139 is the only odd number with this property. [Firoozbakht]

 

  Submitted: 2004-08-24 10:07:45;   Last Modified: 2008-01-30 11:28:00.



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