The book is now available! 163
(another Prime Pages' Curiosity)
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163 is the only known number m (up to 3*10^10) such that m + 4*n^2 for n = 0, 1, 2, ... , 19 are prime. [Firoozbakht]

 

  Submitted: 2008-10-16 22:00:55;   Last Modified: 2008-10-26 16:21:46.



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