Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2036393Factored
FactorDigitsBitsDate
641967874794692972049112375.82020-02-27 20:36:50
ECM
DigitsB1Curves
2550000280 / 280
30250000163 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Michael SchrufC63A48873EEDDAC40
Verified (Factored)1999-03-01Eduardo René Rodríguez ÁvilaC63A48873EEDDAC41577438
Verified (Factored)2016-07-15Mark RoseC63A48873EEDDAC41141710
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-02-28Christoph ZengerE1658F17737417981171899553
Verified2020-02-28Jinyuan WangE1658F177374179812638953
Verified2020-03-01Luigi MorelliE1658F17737417981196815653
History
DateUserTypeResult
2020-03-01Luigi MorelliC-PRP
M2036393/64196787479469297204911 : E1658F1773741798
PRP: Verified
PRP without proof (not generated)
2020-02-28Jinyuan WangC-PRP
M2036393/64196787479469297204911 : E1658F1773741798
PRP: Verified
PRP without proof (not generated)
2020-02-28Christoph ZengerC-PRP
M2036393/64196787479469297204911 : E1658F1773741798
PRP: Verified
PRP without proof (not generated)
2020-02-27KeysarecoolF-ECM
Factor: 64196787479469297204911 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1690973818006234)
2019-05-26mikrNF-PM1
B1=4000000, B2=200000000, E=12
2019-03-20chuenkitNF
no factor from 2^67 to 2^68
2016-07-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-07-15Mark RoseC-LL
C63A48873EEDDAC4
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-01ramgeisNF
no factor from 2^65 to 2^66
2015-10-05Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-04-13VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-13VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-17JossNF-PM1
B1=163038
2014-07-04JossNF-PM1
B1=131519
2013-08-29ramgeisNF
no factor from 2^62 to 2^63
2012-02-10Sebastian HornbostelNF
no factor from 2^61 to 2^62
2009-02-05markrNF-PM1
B1=100000, B2=3000000, E=6
2009-01-02Sturle SundeNF
no factor from 2^60 to 2^61