The book is now available! 881705
(another Prime Pages' Curiosity)
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The smallest number, all of whose prime factors are of form 6n+5, whose sum of distinct prime factors is prime: 881705 = 5 * 11 * 17 * 23 * 41 and 5 + 11 + 17 + 23 + 41 = 97 is prime. [Post]

 

  Submitted: 2009-09-02 01:20:09;   Last Modified: 2009-09-02 05:59:35.



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