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
647600599Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2042085993441061436872167.52016-09-06 20:06:55
History
DateUserTypeResult
2016-09-06NipalF
Factor: 204208599344106143687 / TF: 67-70
2014-06-14sasakiNF
no factor from 2^66 to 2^67
2014-03-19america64NF
no factor from 2^65 to 2^66