Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
105073421Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
81957268391032.92007-09-19 12:58:40
274399238941511444.62007-09-19 12:58:39