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

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MnStatusDetails
629743Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
51638927825.6old
377845801928.52008-07-16 09:23:35
124245480444696538799680812683.42017-02-10 13:27:39
ECM
DigitsB1Curves
2550000280 / 280
30250000214 / 640
Estimated T-Level: 26.7
TF below 2^84 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-27Oliver Kruse8326B9ABB1CB12D81013
Verified2017-10-18Oliver KruseCAAAE12D02034CDD335105953
Verified2017-10-19kkmrkkblmbrbkCAAAE12D02034CDD352595053
History
DateUserTypeResult
2023-01-13USAFSSNF-PM1
B1=2000000, B2=6199753560
2017-10-19kkmrkkblmbrbkC-PRP
M629743/51638927/377845801/12424548044469653879968081 : CAAAE12D02034CDD
PRP: Verified
PRP without proof (small exponent)
2017-10-18Oliver KruseC-PRP
M629743/51638927/377845801/12424548044469653879968081 : CAAAE12D02034CDD
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M629743/51638927/377845801/12424548044469653879968081 : 8326B9ABB1CB12D8
PRP: Verified
PRP without proof (not generated)
2017-02-10TJAOIF-ECM
Factor: 12424548044469653879968081 / (ECM curve 7, B1=50000, B2=5000000)
2008-07-16J FeitsmaF
Factor: 377845801