The book is now available! 9227
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ 9227 = 23 + 35 + 57 + 711 + 1113 + 1317 + 1719 + 1923 + 2329 is prime. Note that each term is a concatenation of consecutive primes. [Poo Sung]

+ The smallest Yarborough emirp that yields another Yarborough emirp when each of its digit is replaced by its cube, i.e., (9^3:2^3:2^3:7^3 -> 72988343). [Bajpai]




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