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
6995137Factored
FactorDigitsBitsDate
44797417608853385008904990232891.92023-09-26 17:22:16
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)Brian J. Beesley88D7CC632B53068D0
Verified (Factored)1999-07-04Michael Lyons88D7CC632B53068D3127731
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2023-09-27Naegi MakotoC3E469D2232E06B21313056853
P-1 factors
DateFactorB1B2
2023-09-26447974176088533850089049902335000009616446840
History
DateUserTypeResult
2023-09-27curtiscCERT
PRP Certification
Proof certified good
2023-09-27Naegi MakotoC-PRP
M6995137/4479741760885338500890499023 : C3E469D2232E06B2
PRP proof power = 8
PRP: Verified
Proof certified good
2023-09-26ThaF-PM1
Factor: 4479741760885338500890499023 / (P-1, B1=3500000, B2=9616446840)
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2020-12-24takahashiNF-PM1
B1=2500000, B2=50000000, E=12
2020-09-20takahashiNF
no factor from 2^70 to 2^71
2020-07-27takahashiNF
no factor from 2^69 to 2^70
2020-04-03TJAOINF
no factor from 2^68 to 2^69
2019-03-06takahashiNF-PM1
B1=250000, B2=4400000, E=6
2018-02-26-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-27Gordon SpenceNF
no factor from 2^66 to 2^67
2015-07-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-14lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64