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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The largest difference between two consecutive primes less than 10^{8}. [Luhn] The difference of two smallest pseudoprimes base 2 is 220, the smallest amicable number. [Gupta] The product of the first 220 composite numbers falls between a twin prime pair. [Gaydos]
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