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
5423741Factored
FactorDigitsBitsDate
221651026886327959167691132684.22015-04-05 17:33:30
ECM
DigitsB1Curves
25500004 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-10-04Johannes StahlB7E668B59B186D3E0
Verified (Factored)2000-07-25Tim PfaltzgraffB7E668B59B186D3E4877667
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-12-02Oliver Kruse480464FC4245283D1115295253
Verified2018-03-04kkmrkkblmbrbk480464FC4245283D1246824053
History
DateUserTypeResult
2018-03-04kkmrkkblmbrbkC-PRP
M5423741/22165102688632795916769113 : 480464FC4245283D
PRP: Verified
PRP without proof (not generated)
2017-12-02Oliver KruseC-PRP
M5423741/22165102688632795916769113 : 480464FC4245283D
PRP: Verified
PRP without proof (not generated)
2015-04-05Sid & AndyF-ECM
Factor: 22165102688632795916769113
2015-01-01monstNF
no factor from 2^64 to 2^65
2014-12-31NesowaNF
no factor from 2^63 to 2^64
2010-10-23Squeeky_SquirrelNF-PM1
B1=60000, B2=960000, E=6
2009-05-13GrunwalderGIMPNF
no factor from 2^62 to 2^63