Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
6426989Factored
FactorDigitsBitsDate
1055549268641969503912166.52011-12-06 20:31:35
ECM
DigitsB1Curves
25500003 / 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)1999-01-29Stephen Wood0AE6C934359BF2840
Verified (Factored)2001-03-11Thomas Traber0AE6C934359BF2844655818
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-12-18RuzovejC1F2D29032E78ADB1593421353
Verified2018-06-30kkmrkkblmbrbkC1F2D29032E78ADB1405232753
History
DateUserTypeResult
2023-05-11This -Anonymous-NF-PM1
B1=100000, B2=2000000, E=6
2018-06-30kkmrkkblmbrbkC-PRP
M6426989/105554926864196950391 : C1F2D29032E78ADB
PRP: Verified
PRP without proof (not generated)
2017-12-18RuzovejC-PRP
M6426989/105554926864196950391 : C1F2D29032E78ADB
PRP: Verified
PRP without proof (not generated)
2011-12-06JimBaF-ECM
Factor: 105554926864196950391