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
207173173Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1192830019301333184412166.72015-10-12 13:50:26
History
DateUserTypeResult
2015-10-12ConductorF
Factor: 119283001930133318441 / TF: 66-67
2013-10-05riccardo ubertiNF
no factor from 2^65 to 2^66
2011-05-10sasaki3NF
no factor from 2^64 to 2^65