The book is now available! 486
(another Prime Pages' Curiosity)
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+ The twin primes 6797727*2^15328 + 1 were found on an ordinary IBM-compatible PC with an Intel 486 DX microprocessor.

+ The only sum of a zeroless pandigital expression involving the addition of a Mersenne prime and a Sophie Germain prime, i.e., 127 + 359 = 486. [Gaydos and Honaker]

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