The book is now available! 53
(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)

+ pi(35) = 53. [Firoozbakht]

+ 1000^53 - 53 is prime. Note that 53 is the smallest number with this property. [Firoozbakht]

+ 53 = prime( prime(5) + prime(3) ). Note that 53 is the only number with this property. [Firoozbakht]

+ The floor function of e^pi^phi, where phi is the golden ratio. [Firoozbakht]

+ 53 = prime(5*3) + pi(5*3). It is the only known prime with this property. [Firoozbakht]

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




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