The book is now available! 181441
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ 181441 [(9!+2)/2 = 13*17*821] is the first number of the form (n!+2)/2 that is not prime or the square of a prime.

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