The book is now available! 3917
(another Prime Pages' Curiosity)
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The smallest prime (emirp) with Hamming weight n (i.e. with exactly n 1s when written in binary): 2 + 3 + 7 + 23 + 31 + 311 + 127 + 383 + 991+ 2039 = 3917. [Post]

 

  Submitted: 2008-07-01 12:53:25;   Last Modified: 2008-07-01 16:23:30.



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