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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Just showing those entries submitted by 'Firoozbakht': (Click here to show all) The only prime p such that p times reversal(p)  1 is prime. [Firoozbakht]The only known number n such that the sum of the proper divisors of n is equal to phi(n). [Firoozbakht] Only prime whose sum of divisors is prime. [Firoozbakht]
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