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
2981999Factored
FactorDigitsBitsDate
44450652939010423164964511772891.82020-10-15 11:24:38
ECM
DigitsB1Curves
255000023 / 280
Estimated T-Level: 20.4
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Emile StateE7279F3655BE7C000
Verified (Factored)1999-11-24Anton MaraisE7279F3655BE7C00743014
Verified (Factored)2018-10-20kkmrkkblmbrbkE7279F3655BE7C002031579
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-10-15ATH29D3690D2417D05F1112224053
History
DateUserTypeResult
2020-10-15firejugglerCERT
PRP Certification
Proof certified good
2020-10-15ATHC-PRP
M2981999/4445065293901042316496451177 : 29D3690D2417D05F
PRP proof power = 7
PRP: Verified
Proof certified good
2020-10-15mnd9F-ECM
Factor: 4445065293901042316496451177 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7993164515035978)
2019-10-14BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2018-12-27chuenkitNF
no factor from 2^67 to 2^68
2018-10-20kkmrkkblmbrbkC-LL
E7279F3655BE7C00
2017-12-03Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-10JossNF-PM1
B1=396800, B2=3968000, E=6
2016-06-18JossNF-PM1
B1=198400, B2=4050000, E=6
2016-02-27omylistNF
no factor from 2^65 to 2^66
2015-04-13lycornNF
no factor from 2^64 to 2^65
2015-04-13lycornNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-07-13Rob_DeeNF
no factor from 2^61 to 2^62
2010-10-25markrNF-PM1
B1=100000, B2=2025000, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61