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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) 6 + 1, 6 + 66 + 1, 6*66 + 1 , 6 + 66 + 666 + 1 and 6*66*666 + 1 are all primes. [Firoozbakht]((6)*6*6  1, (6)*6*6 + 1 ) are twin primes. [Firoozbakht] 6 is probably the only even number n such that both numbers n^n  (n+1) and n^n + (n+1) are primes. [Firoozbakht]
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