The book is now available! 839
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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The smallest multidigit prime p such that p*R(p)+1 is emirp, i.e., 839*938+1=786983. [Loungrides]


  Submitted: 2011-03-09 08:58:43;   Last Modified: 2018-12-07 18:32:50.

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