The book is now available! 29
(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)

+ 29 is only known number m such that both m!-Rm and m!+Rm are primes. I.e., 29! - 111...1 (29 ones) and 29! + 111...1 (29 ones) are both primes. [Firoozbakht]

+ pi(29) = phi(29) - 2*9. [Firoozbakht]




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