The book is now available! 42
(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)

+ 42 = (pi(4)*pi(2)) * (prime(4)*prime(2)). Note that 42 is the only number less than 20000000 with this property. [Firoozbakht]

+ 42^42 + pi(42) is prime. It is interesting that all numbers less than 42 with this property are are all prime factors of 42. [Firoozbakht]

+ All five numbers 1 + 42, 1 + 4242, 1 + 424242, 1 + 42424242 and 1 + 4242424242 are prime. [Firoozbakht]




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