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
21236687Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
25403332245892700086972271.12021-10-01 18:56:27
LL
StatusDateUserResidueShift
Verified (Factored)2004-05-11James Smith3C69D8800274E94918252199
Verified (Factored)2009-04-09S048033C69D8800274E9498106972
History
DateUserTypeResult
2025-06-16GregF
Factor: 2540333224589270008697 / TF: 71-72
2021-10-01-Anonymous-F
Factor: 2540333224589270008697 / TF: 71-72*
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2018-04-22ramgeisNF
no factor from 2^69 to 2^70
2017-12-22VictordeHollanderNF
no factor from 2^68 to 2^69
2017-05-24ramgeisNF
no factor from 2^67 to 2^68
2015-04-20NRNF
no factor from 2^66 to 2^67
2009-04-09S04803C-LL
3C69D8800274E949