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
3398063Factored
FactorDigitsBitsDate
60422279933497129191962.42012-11-02 08:22:35
ECM
DigitsB1Curves
25500006 / 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)Robert FribergAA5739CBD8562A7A0
Verified (Factored)1999-12-30Jörg ThomsenAA5739CBD8562A7A2910340
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-05kkmrkkblmbrbk94C549A0619C179B1280818253
Verified2017-11-21Oliver Kruse94C549A0619C179B1226563453
History
DateUserTypeResult
2022-09-05JossNF-PM1
B1=1132687, B2=213444000
2022-04-24LordJuliusNF
no factor from 2^66 to 2^67
2022-04-24LordJuliusNF
no factor from 2^65 to 2^66
2022-04-24LordJuliusNF
no factor from 2^64 to 2^65
2022-04-24LordJuliusNF
no factor from 2^63 to 2^64
2022-04-24LordJuliusNF
no factor from 2^1 to 2^62
2022-01-09JossNF-PM1
B1=1132687, B2=111642300
2021-07-09JossNF
no factor from 2^67 to 2^68
2021-03-14JossNF-PM1
B1=339806, B2=3737869, E=6
2017-11-21Oliver KruseC-PRP
M3398063/6042227993349712919 : 94C549A0619C179B
PRP: Verified
PRP without proof (not generated)
2017-11-05kkmrkkblmbrbkC-PRP
M3398063/6042227993349712919 : 94C549A0619C179B
PRP: Verified
PRP without proof (not generated)
2012-11-02lycornF
Factor: 6042227993349712919
2011-10-25USAFSSNF-PM1
B1=60000, B2=945000, E=6
2011-08-18Grant McCrackenNF
no factor from 2^61 to 2^62
2009-07-11Carsten KossendeyNF-PM1
B1=15000, B2=206250
2009-03-25S485122NF
no factor from 2^60 to 2^61