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
211619743Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
916278253624375137912066.32015-10-19 11:57:36
History
DateUserTypeResult
2015-10-19ConductorF
Factor: 91627825362437513791 / TF: 66-67
2013-08-15David CampeauNF
no factor from 2^65 to 2^66
2011-05-20Mr-PlonkNF
no factor from 2^64 to 2^65