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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The number 222^{2} + 222^{22} + 222^{222} + 1 is prime. [Patterson] 222 is the smallest repdigit such that the product of itself and all truncations of itself plus and minus one results in twin primes. I.e., 222*22*2 ± 1 are twin primes. [Opao]
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