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
5012981Factored
FactorDigitsBitsDate
25694034115511341.2old
50378932221111405771962.12016-06-30 11:38:36
171985692039412206545091292683.82019-09-16 09:34:31
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk3BE2A3E514ADE80D2013
Verified (Factored)2018-04-26Oliver Kruse3BE2A3E514ADE80D2137026213
Verified2019-09-17mnd9B2952E57483560693483322953
Verified2019-09-18marssystemsB2952E57483560693188337653
History
DateUserTypeResult
2022-08-11USAFSSNF-PM1
B1=140000, B2=62228670
2019-09-18marssystemsC-PRP
M5012981/2569403411551/5037893222111140577/17198569203941220654509129 : B2952E5748356069
PRP: Verified
PRP without proof (not generated)
2019-09-17mnd9C-PRP
M5012981/2569403411551/5037893222111140577/17198569203941220654509129 : B2952E5748356069
PRP: Verified
PRP without proof (not generated)
2019-09-16mnd9F-ECM
Factor: 17198569203941220654509129 / (ECM curve 3, B1=50000, B2=5000000, Sigma=4542131139503502)
2018-04-26Oliver KruseC-PRP
M5012981/2569403411551/5037893222111140577 : 3BE2A3E514ADE80D
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M5012981/2569403411551/5037893222111140577 : 3BE2A3E514ADE80D
PRP: Verified
PRP without proof (not generated)
2016-06-30TJAOIF
Factor: 5037893222111140577 / TF: 62-63