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Just showing those entries submitted by 'Broadhurst': (Click here to show all) This prime is the sum of the 8th powers of integers with 1250 and 1112 digits, namely N=(28*x^92*x)^8+(32*x^81)^8, where x=5*17*24135542731*164430412448406653*15351348188298712888796082898266183649073690205237660009696003540868926490197736695774128091808423365118301699 is completely factorized into proven primes. Since N1 is divisible by 5*(2*x^2)^12, which exceeds the cube root of N, the primality of N may be proven by the methods of Brillhart, Lehmer and Selfridge. [Broadhurst and Twain]
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