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(just those submitted by Firoozbakht)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

Just showing those entries submitted by 'Firoozbakht': (Click here to show all)

+ The only known number n such that the reversal of n^prime(n) is prime. [Firoozbakht]

+ The smallest emirp p such that reversal(p^2) is prime. [Firoozbakht]

+ The smallest emirp p such that reversal(p + reversal(p)) is prime. [Firoozbakht]

+ 2! + 3! + 5! + ... + 29! = 31 (mod 37). It is the largest known prime with this property and there exists only one other such prime. [Firoozbakht]

+ 37 = prime(|prime(3) - prime(7)|). It is the smallest prime with this property. [Firoozbakht]

+ The smallest emirp p such that prime(p) is emirp. [Firoozbakht]

(There is one curio for this number that has not yet been approved by an editor.)




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