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

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MnStatusDetails
2944813Factored
FactorDigitsBitsDate
5410189621411233417912168.92020-09-14 01:59:14
ECM
DigitsB1Curves
255000019 / 280
Estimated T-Level: 20.3 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Rich ReibenDD5817FAFB5117360
Verified (Factored)Ramesh RajagopalDD5817FAFB5117360
Verified (Factored)1999-05-09Gary KeyesDD5817FAFB5117361205369
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-09-14ATH7A543900CEA445BD198458253
History
DateUserTypeResult
2020-09-14Ben DeloCERT
PRP Certification
Proof certified good
2020-09-14ATHC-PRP
M2944813/541018962141123341791 : 7A543900CEA445BD
PRP proof power = 7
PRP: Verified
Proof certified good
2020-09-14mnd9F-ECM
Factor: 541018962141123341791 / (ECM curve 1, B1=50000, B2=5000000, Sigma=3985252724067351)
2018-12-24chuenkitNF
no factor from 2^67 to 2^68
2017-11-28Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-24ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-04-29VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-27VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-12-23markrNF
no factor from 2^61 to 2^62
2010-11-05markrNF-PM1
B1=105000, B2=2310000, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61