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

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MnStatusDetails
3020527Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
66411120846689779691962.52010-10-15 06:31:28
ECM
DigitsB1Curves
255000067 / 280
Estimated T-Level: 21.2 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Anthony Kenck7746212E7E474EDC0
Verified (Factored)1999-12-01Brad C. Karthauser7746212E7E474EDC108149
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-27Oliver Kruse98E0999F82B6F5661236089253
Verified2017-12-10kkmrkkblmbrbk98E0999F82B6F5661149789153
History
DateUserTypeResult
2022-03-10LordJuliusNF
no factor from 2^64 to 2^65
2022-03-10LordJuliusNF
no factor from 2^63 to 2^64
2022-01-23JossNF-PM1
B1=1000000, B2=119912100
2021-03-16JossNF
no factor from 2^67 to 2^68
2021-03-15JossNF
no factor from 2^66 to 2^67
2021-03-14JossNF
no factor from 2^65 to 2^66
2020-10-13JossNF-PM1
B1=302052, B2=3020527, E=6
2020-10-12JossNF-PM1
B1=302052
2017-12-10kkmrkkblmbrbkC-PRP
M3020527/6641112084668977969 : 98E0999F82B6F566
PRP: Verified
PRP without proof (not generated)
2017-10-27Oliver KruseC-PRP
M3020527/6641112084668977969 : 98E0999F82B6F566
PRP: Verified
PRP without proof (not generated)
2010-10-15markrF
Factor: 6641112084668977969
2010-09-23Sid & AndyNF
no factor from 2^61 to 2^62
2009-02-02Jayson KingNF
no factor from 2^60 to 2^61