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
326087383Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
19212628438121275907512270.72019-10-14 04:31:14
History
DateUserTypeResult
2025-04-11James HeinrichF
Factor: 1921262843812127590751 / TF: 70-71
2019-10-14Smok_bmv F
Factor: 1921262843812127590751 / TF: 70-71*
2019-03-01sasakiNF
no factor from 2^69 to 2^70
2018-08-15Chabot PrimeNF
no factor from 2^68 to 2^69
2017-01-06garoNF
no factor from 2^67 to 2^68
2016-03-04Judge HaleNF
no factor from 2^66 to 2^67
2014-04-08tscNF
no factor from 2^65 to 2^66
2011-11-13EPFNF
no factor from 2^64 to 2^65