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
1913719Factored
FactorDigitsBitsDate
22470935549742305207571192580.92020-01-14 02:34:29
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John Lyon09211F41B3D5550B0
Verified (Factored)1998-12-21Michael Croon09211F41B3D5550B1882593
Verified (Factored)2015-07-14MadPoo09211F41B3D5550B1040415
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-01-14Christoph Zenger1F23F0AA5F4E49B11104527653
Verified2020-01-15rbanov1F23F0AA5F4E49B11187461753
History
DateUserTypeResult
2020-01-15rbanovC-PRP
M1913719/2247093554974230520757119 : 1F23F0AA5F4E49B1
PRP: Verified
PRP without proof (not generated)
2020-01-14Christoph ZengerC-PRP
M1913719/2247093554974230520757119 : 1F23F0AA5F4E49B1
PRP: Verified
PRP without proof (not generated)
2020-01-14daveward2005F-ECM
Factor: 2247093554974230520757119 / (ECM curve 2, B1=50000, B2=5000000)
2019-04-27chuenkitNF
no factor from 2^67 to 2^68
2018-02-26TJAOINF
no factor from 2^66 to 2^67
2017-12-17mikrNF-PM1
B1=8000000, B2=320000000, E=12
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-09-02ramgeisNF
no factor from 2^65 to 2^66
2015-07-14MadPooC-LL
09211F41B3D5550B
2015-05-16snme2pm1NF
no factor from 2^64 to 2^65
2015-05-16snme2pm1NF
no factor from 2^63 to 2^64
2011-08-09kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2011-07-17GrunwalderGIMPNF
no factor from 2^1 to 2^63
2009-05-29Architects CubedNF
no factor from 2^60 to 2^61