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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The prime 112131323 is the concatenation of 1, 1, 2, 1, 3, 1, 3, 2, 3; which is the number of prime factors of Mersenne number M(n) = 2^n  1 from n = 2 to n = 10 (counted with multiplicity), or from n+1 to 10 if we allow a leftmost digit of 0. [Post]
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