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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 19 Sophie Germain primes whose sums of reciprocals of digits equal one. The smallest is 86843 and the largest is 98689889. [Gaydos]


  Submitted: 2018-04-03 09:22:22;   Last Modified: 2018-04-03 10:29:01.

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