The book is now available! 87
(another Prime Pages' Curiosity)
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87 = 3 * 29, and curiously 872 + 32 + 292 and 872 - 32 - 292 are primes. [Luhn]

 

  Submitted: 2000-12-19 10:44:39;   Last Modified: 2008-01-30 11:28:00.



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