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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Exponent Range:










MnStatusDetails
42767Factored
FactorDigitsBitsDate
131922456549707639363772373.5old
4656001562811411074554753329164932105.22019-04-22 11:12:12
2136231308000188228548103015836770361738124.02016-11-20 16:38:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000634 / 4588
Estimated T-Level: 35.7
TF below 2^114 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk60A8DD636437CC702013
Verified (Factored)2017-09-25George Woltman60A8DD636437CC702102513
Verified (Factored)2017-10-02kkmrkkblmbrbk60A8DD636437CC702013
Verified2019-04-23matzetoni81B802F1A75370153403453
Verified2019-05-02roemer220181B802F1A753701533969353
P-1 factors
DateFactorB1B2
2016-11-20213623130800018822854810301583677036171000000003042014761758
History
DateUserTypeResult
2023-04-15JacobZNF-PM1
B1=840000000, B2=576806850219600
2019-05-02roemer2201C-PRP
M42767/13192245654970763936377/21362313080001882285481030158367703617/46560015628114110745547533291649 : 81B802F1A7537015
PRP: Verified
PRP without proof (small exponent)
2019-04-23matzetoniC-PRP
M42767/13192245654970763936377/46560015628114110745547533291649/21362313080001882285481030158367703617 : 81B802F1A7537015
PRP: Verified
PRP without proof (small exponent)
2019-04-22Niels_Mache_NextcloudF-ECM
Factor: 46560015628114110745547533291649 / (ECM curve 1, B1=1000000, B2=100000000)
2017-10-02kkmrkkblmbrbkC-PRP
M42767/13192245654970763936377/21362313080001882285481030158367703617 : 60A8DD636437CC70
PRP: Verified
PRP without proof (not generated)
2017-09-25George WoltmanC-PRP
M42767/known_factors : 60A8DD636437CC70
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M42767/13192245654970763936377/21362313080001882285481030158367703617 : 60A8DD636437CC70
PRP: Verified
PRP without proof (not generated)
2016-11-20kkmrkkblmbrbkF-PM1
Factor: 21362313080001882285481030158367703617 / (P-1, B1=100000000, B2=3042014761758)
2016-09-19kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12