The book is now available! 17947
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ The smallest brilliant number, 17947 = 131 * 137, whose the reversal is a 2-sphenic number, with all its prime factors being double-digit emirps, i.e., 74971 = 13 * 73 * 79. [Loungrides]




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