Marin Mersenne 2^P-1
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MnStatusDetails
3343861Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
26401136661818464331961.22011-08-27 11:35:50
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1997-11-12Herb SavageFE00A0CF97F5865E0
Verified (Factored)1998-10-18Jim McColmFE00A0CF97F5865E0
Verified (Factored)1999-06-15Jason PyeronFE00A0CF97F5865E1242161
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-04Oliver KruseFE80C711AFC4AF121176874053
Verified2017-12-17alan145FE80C711AFC4AF12131530953
History
DateUserTypeResult
2022-09-06JossNF-PM1
B1=1114620, B2=226749600
2022-04-22LordJuliusNF
no factor from 2^66 to 2^67
2022-04-22LordJuliusNF
no factor from 2^65 to 2^66
2022-04-22LordJuliusNF
no factor from 2^64 to 2^65
2022-04-22LordJuliusNF
no factor from 2^63 to 2^64
2022-04-22LordJuliusNF
no factor from 2^62 to 2^63
2022-01-24JossNF-PM1
B1=1114620, B2=119912100
2021-05-14JossNF
no factor from 2^67 to 2^68
2021-03-10JossNF-PM1
B1=334386, B2=3678247, E=6
2017-12-17alan145C-PRP
M3343861/2640113666181846433 : FE80C711AFC4AF12
PRP: Verified
PRP without proof (not generated)
2017-11-04Oliver KruseC-PRP
M3343861/2640113666181846433 : FE80C711AFC4AF12
PRP: Verified
PRP without proof (not generated)
2011-08-27markrF
Factor: 2640113666181846433
2009-07-04Carsten KossendeyNF-PM1
B1=15000, B2=206250
2009-03-29S485122NF
no factor from 2^60 to 2^61