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
209607967Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5289589281533179861612168.82017-11-04 19:25:18
History
DateUserTypeResult
2025-03-23James HeinrichF
Factor: 528958928153317986161 / TF: 68-70
2017-11-04AlissonF
Factor: 528958928153317986161 / TF: 68-69
2016-09-05XolotlNF
no factor from 2^67 to 2^68
2015-10-12Mr-PlonkNF
no factor from 2^66 to 2^67
2013-08-09-Anonymous-NF
no factor from 2^65 to 2^66
2011-05-17dslNF
no factor from 2^64 to 2^65