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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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The largest 2-digit integer N such that N, 4*N and 5*N are all reversals of primes. [Post]


  Submitted: 2009-11-30 21:06:28;   Last Modified: 2009-12-01 18:10:09.

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