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

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MnStatusDetails
1463611Factored
FactorDigitsBitsDate
1649262882689945673146332477.12017-08-31 23:22:09
ECM
DigitsB1Curves
2550000280 / 280
30250000105 / 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)ROLAND BOCKHORST071A6CA93D7245AC0
Verified (Factored)1999-02-14Matthew Gauthier071A6CA93D7245AC248979
Verified (Factored)2015-06-27MadPoo071A6CA93D7245AC959365
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-01Oliver Kruse4578436E8C7868051013
Verified2017-10-27kkmrkkblmbrbk4578436E8C786805129454613
History
DateUserTypeResult
2017-10-27kkmrkkblmbrbkC-PRP
M1463611/164926288268994567314633 : 4578436E8C786805
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M1463611/164926288268994567314633 : 4578436E8C786805
PRP: Verified
PRP without proof (not generated)
2017-08-31Chang Chia-TcheF-ECM
Factor: 164926288268994567314633 / (ECM curve 2, B1=50000, B2=5000000)
2016-08-27Bruno VictalNF-PM1
B1=2500000, B2=62500000, E=12
2016-08-23Bruno VictalNF-PM1
B1=2500000, B2=62500000, E=12
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
2015-09-20ramgeisNF
no factor from 2^65 to 2^66
2015-06-27MadPooC-LL
071A6CA93D7245AC
2015-05-19alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2015-03-30snme2pm1NF
no factor from 2^64 to 2^65
2015-03-30snme2pm1NF
no factor from 2^63 to 2^64
2011-03-08GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-09Architects CubedNF
no factor from 2^60 to 2^61
2009-04-02axnNF-PM1
B1=800000, B2=16000000, E=12