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
2019041Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
12114247823.5old
2148764685651392840005932477.52022-12-20 22:37:19
ECM
DigitsB1Curves
2550000280 / 280
30250000116 / 640
Estimated T-Level: 25.9
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse16CD986D43B3A11D1013
Verified (Factored)2017-11-13kkmrkkblmbrbk16CD986D43B3A11D1193263513
Verified2022-12-22NesowaB10FCF69FBD08800249960853
History
DateUserTypeResult
2022-12-22slandrumCERT
PRP Certification
Proof certified good
2022-12-22NesowaC-PRP
M2019041/12114247/214876468565139284000593 : B10FCF69FBD08800
PRP proof power = 7
PRP: Verified
Proof certified good
2022-12-20NesowaF-ECM
Factor: 214876468565139284000593 / (ECM curve 2, B1=50000, B2=27023535, Sigma=2331296143112467)
2017-11-13kkmrkkblmbrbkC-PRP
M2019041/12114247 : 16CD986D43B3A11D
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M2019041/12114247 : 16CD986D43B3A11D
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12