The book is now available! 7549
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ A prime equal to the concatenation of the four single-digit primes plus their sum: 7532 + (7+5+3+2). [Silva]

+ The largest known prime such that p - x2 is composite for x = 1...sqrt(p). [Crespi de Valldaura]

+ Probably the largest prime not of the form p + k^2, with p prime and k > 0. [Russo]

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