Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
11773997Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
376450646275929183436972375.02022-02-09 18:34:15
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-01-21Marc HoneyAF5BF7839EEC5B487123210
Verified (Factored)2004-04-20Ryan SchulzAF5BF7839EEC5B485880892
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-02-16Poao40F6F9521DD92CE71888846253
P-1 factors
DateFactorB1B2
2022-02-09376450646275929183436972000000642123300
History
DateUserTypeResult
2022-02-16curtiscCERT
PRP Certification
Proof certified good
2022-02-16PoaoC-PRP
M11773997/37645064627592918343697 : 40F6F9521DD92CE7
PRP proof power = 8
PRP: Verified
Proof certified good
2022-02-09Architects CubedF-PM1
Factor: 37645064627592918343697 / (P-1, B1=2000000, B2=642123300)
2021-10-30-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-17SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2018-01-21ramgeisNF
no factor from 2^68 to 2^69
2018-01-21ramgeisNF
no factor from 2^67 to 2^68
2016-03-31ThaNF-PM1
B1=300000, B2=6000000, E=6
2016-02-08VictordeHollanderNF
no factor from 2^66 to 2^67
2013-11-26NesowaNF
no factor from 2^65 to 2^66
2013-10-25lycornNF
no factor from 2^64 to 2^65