29619...62433 (65-digits)

This number is a prime.

29619 0820317817 0875878944 5286032309 0896892455 8140443754 0274962433

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This larger of a pair of twin primes (9*2²¹¹+1) was discovered by Emma Lehmer in 1964 and held the record for a number of years (The Journal of Recreational Mathematics, October 1970). [Merickel]

Submitted: 2012-03-27 19:27:58; Last Modified: 2012-03-28 00:53:13.