The book is now available! 563
(another Prime Pages' Curiosity)
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As Pierre Cami points out, this is the smallest prime with a twin Carmichael number, since 563 - 2 = 561 is the first Carmichael number. [Post]

 

  Submitted: 2007-12-14 11:47:17;   Last Modified: 2008-01-30 11:28:00.



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