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
1862933Factored
FactorDigitsBitsDate
985885945939768517367772376.42019-12-03 20:15:51
929404466439427179385444312686.32024-01-09 09:13:38
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)Guenther RuedigerB82FA12D80AA90F60
Verified (Factored)1998-12-13Bruce MitchellB82FA12D80AA90F61701109
Verified (Factored)2015-06-27MadPooB82FA12D80AA90F61452917
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2019-12-03mrh4DAF595DF785BAA81128776253
Verified (Factored)2019-12-04marssystems4DAF595DF785BAA8122724653
Verified2024-01-09Naegi Makoto4DAF595DF785BAA82110448753
History
DateUserTypeResult
2024-01-09Schnell LabCERT
PRP Certification
Proof certified good
2024-01-09Naegi MakotoC-PRP
M1862933/98588594593976851736777/92940446643942717938544431 : 4DAF595DF785BAA8
PRP proof power = 7
PRP: Verified
Proof certified good
2024-01-09TJAOIF-ECM
Factor: 92940446643942717938544431 / (ECM curve 9, B1=250000, B2=40000000, Sigma=1262295826585993)
2019-12-04marssystemsC-PRP
M1862933/98588594593976851736777 : 4DAF595DF785BAA8
PRP: Verified (Factored)
PRP without proof (not generated)
2019-12-03mrhC-PRP
M1862933/98588594593976851736777 : 4DAF595DF785BAA8
PRP: Verified (Factored)
PRP without proof (not generated)
2019-12-03KeysarecoolF-ECM
Factor: 98588594593976851736777 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1820356406482684)
2019-06-24TJAOINF
no factor from 2^67 to 2^68
2018-10-25JossNF-PM1
B1=2488320, B2=204922630, E=12
2018-09-13JossNF-PM1
B1=2488320, B2=186293300, E=12
2018-04-30TJAOINF
no factor from 2^66 to 2^67
2018-02-26JossNF-PM1
B1=2488320, B2=99532800, E=12
2018-02-10JossNF-PM1
B1=2488320, B2=49766400, E=12
2017-12-27JossNF-PM1
B1=2488320, B2=24883200, E=12
2017-02-19JossNF-PM1
B1=1244160, B2=12441600, E=12
2017-01-14JossNF-PM1
B1=1036800
2016-12-30JossNF-PM1
B1=864000
2016-10-29JossNF-PM1
B1=720000
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2015-10-07Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-09-10ramgeisNF
no factor from 2^65 to 2^66
2015-06-27MadPooC-LL
B82FA12D80AA90F6
2015-05-07snme2pm1NF
no factor from 2^64 to 2^65
2015-05-07snme2pm1NF
no factor from 2^63 to 2^64
2012-01-06markrNF-PM1
B1=275000, B2=6000000, E=12
2011-03-08GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-06Architects CubedNF
no factor from 2^60 to 2^61