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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Prime string of consecutive integers from 20 to 47 whereby the composite numbers are replaced by the concatenation of their prime factors (counting multiplicity) {2*2*5}{3*7}...{2*23}{47}. Replacing the composites by the sum of these prime factors yields yet another prime of length 53 or {9}{10}...{25}{47}. [De Geest]
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