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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 159 = 3 x 53, and upon concatenating the prime factors, we have a peak palindrome, 353, which is itself a prime. [Trotter] Deshouillers (1973) showed that all integers are the sum of at most 159 prime numbers.
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