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

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MnStatusDetails
3247429Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
227545315768706219112064.32009-05-20 16:58:57
ECM
DigitsB1Curves
25500004 / 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)1998-05-16Paul Randal & Co25DBE17A4E2D12190
Verified (Factored)1999-07-04Jeremy Somerville25DBE17A4E2D12191028674
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-02Oliver KruseF709C8F6126BE5BE1113858753
Verified2017-12-13kkmrkkblmbrbkF709C8F6126BE5BE1175715753
History
DateUserTypeResult
2022-04-05LordJuliusNF
no factor from 2^66 to 2^67
2022-04-05LordJuliusNF
no factor from 2^65 to 2^66
2022-04-05LordJuliusNF
no factor from 2^63 to 2^64
2022-04-05LordJuliusNF
no factor from 2^62 to 2^63
2022-04-05LordJuliusNF
no factor from 2^1 to 2^62
2022-02-04JossNF-PM1
B1=1000000, B2=119912100
2021-04-15JossNF
no factor from 2^67 to 2^68
2021-01-18JossNF-PM1
B1=324742, B2=3247429, E=6
2020-12-25JossNF-PM1
B1=108247
2017-12-13kkmrkkblmbrbkC-PRP
M3247429/22754531576870621911 : F709C8F6126BE5BE
PRP: Verified
PRP without proof (not generated)
2017-11-02Oliver KruseC-PRP
M3247429/22754531576870621911 : F709C8F6126BE5BE
PRP: Verified
PRP without proof (not generated)
2009-05-20Luigi MorelliF-ECM
Factor: 22754531576870621911
2009-04-05S485122NF
no factor from 2^60 to 2^61