The book is now available! 1885
(another Prime Pages' Curiosity)
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Participate: 		+ 21885-1 + 1885 is prime.

+ The smallest number, all of whose prime factors are of form 4n+1, whose sum of distinct prime factors is prime: 1885 = 5 * 13 * 29; 5 + 13 + 29 = 47. [Post]

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