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

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MnStatusDetails
1830443Factored
FactorDigitsBitsDate
62637589774857418940324888332892.32020-03-15 23:03:43
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert Eals751DAAC9307EB4FC0
Verified (Factored)1998-12-13Leslie K. Koller751DAAC9307EB4FC918434
Verified (Factored)2015-07-18MadPoo751DAAC9307EB4FC1295034
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-03-16Jinyuan WangAD212911754925A01121716053
Verified2020-03-16GunnarLuAD212911754925A01151785253
History
DateUserTypeResult
2020-03-16GunnarLuC-PRP
M1830443/6263758977485741894032488833 : AD212911754925A0
PRP: Verified
PRP without proof (not generated)
2020-03-16Jinyuan WangC-PRP
M1830443/6263758977485741894032488833 : AD212911754925A0
PRP: Verified
PRP without proof (not generated)
2020-03-15Chang Chia-TcheF-ECM
Factor: 6263758977485741894032488833 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2868445453151348)
2019-07-01TJAOINF
no factor from 2^67 to 2^68
2018-09-10JossNF-PM1
B1=1830443, B2=183044300, E=12
2018-03-26TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-09-04ramgeisNF
no factor from 2^65 to 2^66
2015-07-18MadPooC-LL
751DAAC9307EB4FC
2015-06-19mikrNF-PM1
B1=2780000, B2=91760000, E=12
2015-04-26snme2pm1NF
no factor from 2^64 to 2^65
2015-04-26snme2pm1NF
no factor from 2^63 to 2^64
2014-09-22JossNF-PM1
B1=170130
2014-05-19JossNF-PM1
B1=135065
2011-02-07Carsten KossendeyNF-PM1
B1=100000, B2=1675000, E=6
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-13Architects CubedNF
no factor from 2^60 to 2^61