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
2598929Factored
FactorDigitsBitsDate
29178038800858740211188972581.32021-03-07 06:40:46
ECM
DigitsB1Curves
2550000100 / 280
Estimated T-Level: 21.8 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John GuinEFE0AF9FC71E00420
Verified (Factored)1999-04-02Caleb CarrollEFE0AF9FC71E0042622022
Verified (Factored)2018-06-25kkmrkkblmbrbkEFE0AF9FC71E00421599863
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-03-08xyuzyzCFC3EC19366BD810149967153
Verified2021-03-08rucioCFC3EC19366BD8101113954153
History
DateUserTypeResult
2021-03-08NoodlesCERT
PRP Certification
Proof certified good
2021-03-08rucioC-PRP
M2598929/2917803880085874021118897 : CFC3EC19366BD810
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-08xyuzyzC-PRP
M2598929/2917803880085874021118897 : CFC3EC19366BD810
PRP: Verified
PRP without proof (not generated)
2021-03-07mnd9F-ECM
Factor: 2917803880085874021118897 / (ECM curve 4, B1=50000, B2=5000000, Sigma=7080456703448387)
2019-03-04TJAOINF
no factor from 2^67 to 2^68
2018-06-25kkmrkkblmbrbkC-LL
EFE0AF9FC71E0042
2017-08-21Gordon SpenceNF
no factor from 2^66 to 2^67
2016-09-03mikrNF-PM1
B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-05ramgeisNF
no factor from 2^65 to 2^66
2015-02-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-27VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-23Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-04-19James HeinrichNF-PM1
B1=175000, B2=4156250, E=6
2011-01-15JossNF-PM1
B1=50000
2010-11-16JossNF-PM1
B1=20000
2009-01-30Sturle SundeNF
no factor from 2^60 to 2^61