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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 443463509 is a prime number formed by the concatenation of 3 primes: 443, 463 and 509. Note that all possible concatenations of these 3 primes produce another prime: 443463509, 443509463, 463443509, 463509443, 509443463, 509463443. [Rivera]
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