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

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There are 79 strobogrammatic numbers with sums of reciprocals of digits that are less than one. [Gaydos]


  Submitted: 2018-02-26 20:33:23;   Last Modified: 2018-02-26 20:34:28.

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