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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Let R(n)=(10^n1)/9. As of December 2003, 34*R(36400)42000040044444004000024*10^2264*R(36400)/R(4550)1 was the largest known palindromic prime, all of whose decimal digits are prime. Its formula and proof are described in PrimeForm. [Broadhurst]
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