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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 emirp less than a googol that can be represented as the sum of a repdigit number consisting of 6’s and all of its truncations plus 1, i.e., 666666+66666+6666+666+66+6+1, so that deleting the largest repdigit, 666666, the remaining sum, i.e., 66666+6666+666+66+6+1 = 74071, is also emirp. [Loungrides]


  Submitted: 2018-11-11 12:19:35;   Last Modified: 2018-11-11 18:52:36.

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