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

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MnStatusDetails
3223867Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
71299451420491755771962.62011-09-05 11:43:58
ECM
DigitsB1Curves
2550000106 / 280
Estimated T-Level: 21.9 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Rich Harms39539E0D4580782B0
Bad1999-06-26WeaCheslaw L. Oleinik16836A1A750177061888009
Verified (Factored)1999-09-22William Dietrich39539E0D4580782B397451
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-02Oliver Kruse8F598C166A1865D41173999353
Verified2017-12-13kkmrkkblmbrbk8F598C166A1865D41269686253
History
DateUserTypeResult
2022-04-03LordJuliusNF
no factor from 2^66 to 2^67
2022-04-03LordJuliusNF
no factor from 2^65 to 2^66
2022-04-03LordJuliusNF
no factor from 2^64 to 2^65
2022-04-03LordJuliusNF
no factor from 2^63 to 2^64
2022-02-07JossNF-PM1
B1=1000000, B2=119912100
2021-05-11JossNF
no factor from 2^67 to 2^68
2021-01-17JossNF-PM1
B1=322386, B2=3223867, E=6
2017-12-13kkmrkkblmbrbkC-PRP
M3223867/7129945142049175577 : 8F598C166A1865D4
PRP: Verified
PRP without proof (not generated)
2017-11-02Oliver KruseC-PRP
M3223867/7129945142049175577 : 8F598C166A1865D4
PRP: Verified
PRP without proof (not generated)
2011-09-05USAFSSF
Factor: 7129945142049175577
2011-01-12Matteo2DNF-PM1
B1=35000, B2=560000
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-05S485122NF
no factor from 2^60 to 2^61