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

                                             818738425 7421346600 6829740415
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G. L. Honaker, Jr. conjectures that 2^2*3^3*19^19*11251^11251*2980024297506569894680811251^2980024297506569894680811251+1 is prime. Note that 2^2+1, 2^2*3^3+1, 2^2*3^3*19^19+1, and 2^2*3^3*19^19*11251^11251+1, are all proven primes. (He offers a free Prime Curios! T-Shirt to the first person that can prove or disprove the primality of this 81873842574213466006829740415-digit number.)


  Submitted: 2015-02-12 08:59:53;   Last Modified: 2018-12-28 22:38:26.

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