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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) 100^609  609 is prime. Note that 609 is the third number with this property. [Firoozbakht] n = 609 = 5^2^2  2^2^2 is the (5^2)th natural number with the property p = n^2 + 2 is prime; additionally (p  2^2, p) is a pair of prime cousins. Note that n^2  (2*5) and n^2 + (2*5) are primes too! [Herault] (609) is strobogrammatic. The only known case greater than 1. [Resta]
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