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
207543433Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1921655040553056676332167.42015-10-25 15:53:44
History
DateUserTypeResult
2024-03-17James HeinrichF
Factor: 192165504055305667633 / TF: 1-70
2015-10-25ConductorF
Factor: 192165504055305667633 / TF: 67-68
2015-09-27rob147147NF
no factor from 2^66 to 2^67
2013-08-04HardyP GermanyNF
no factor from 2^65 to 2^66
2011-05-11sannerud.comNF
no factor from 2^64 to 2^65