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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Exponent Range:










MnStatusDetails
1837529Factored
FactorDigitsBitsDate
148888690253520940719192373.72020-02-26 04:31:19
5377558699212280168039912478.82021-04-30 08:12:46
ECM
DigitsB1Curves
2550000280 / 280
30250000135 / 640
Estimated T-Level: 26.1
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John Gilmore53BE32159809A9A60
Verified (Factored)1998-12-13Michael Croon53BE32159809A9A6361351
Verified (Factored)2015-07-10MadPoo53BE32159809A9A61191061
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2020-02-26Christoph ZengerA211B5155A259976112132053
Verified (Factored)2020-02-29Luigi MorelliA211B5155A2599761111312853
Verified2021-05-01LOBESA211B5155A259976232976053
History
DateUserTypeResult
2021-05-01Ben DeloCERT
PRP Certification
Proof certified good
2021-05-01LOBESC-PRP
M1837529/14888869025352094071919/537755869921228016803991 : A211B5155A259976
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-30TJAOIF-ECM
Factor: 537755869921228016803991 / (ECM curve 52, B1=50000, B2=6600000)
2020-02-29Luigi MorelliC-PRP
M1837529/14888869025352094071919 : A211B5155A259976
PRP: Verified (Factored)
PRP without proof (not generated)
2020-02-26Christoph ZengerC-PRP
M1837529/14888869025352094071919 : A211B5155A259976
PRP: Verified (Factored)
PRP without proof (not generated)
2020-02-26MarkSF-ECM
Factor: 14888869025352094071919 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4022330489134550)
2019-06-17TJAOINF
no factor from 2^67 to 2^68
2018-08-13JossNF-PM1
B1=1837529, B2=183752900, E=12
2018-01-22TJAOINF
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
2015-09-05ramgeisNF
no factor from 2^65 to 2^66
2015-07-10MadPooC-LL
53BE32159809A9A6
2015-07-02mikrNF-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=169860
2014-05-19JossNF-PM1
B1=134930
2011-02-08Carsten KossendeyNF-PM1
B1=100000, B2=1675000, E=6
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-16Architects CubedNF
no factor from 2^60 to 2^61