Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3180911Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 271
TF target 264
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10200000
B2 = 19598847450
ECM
DigitsB1Curves
2550000280 / 280
3025000069 / 640
Estimated T-Level: 25.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-01-26Joel ArmengaudCA7B78BF01746F610
Verified1999-06-06Ronald C. RosierCA7B78BF01746F612447895
History
DateUserTypeResult
2025-07-17Architects CubedNF
no factor from 2^70 to 2^71
2023-10-29JossNF-PM1
B1=3180911, B2=3203270070
2023-02-24Sid & AndyNF-PM1
B1=10200000, B2=19598847450
2022-12-16TJAOINF
no factor from 2^69 to 2^70
2022-10-11JossNF-PM1
B1=3180911, B2=1025080980
2021-07-28MadPooNF
no factor from 2^68 to 2^69
2019-09-16mikrNF-PM1
B1=3000000, B2=120000000, E=12
2019-01-07TJAOINF
no factor from 2^67 to 2^68
2017-04-26Gordon SpenceNF
no factor from 2^66 to 2^67
2015-12-03HBendtzNF-PM1
B1=500000, B2=12000000, e=12
2015-06-18ThaNF
no factor from 2^65 to 2^66
2015-02-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-15VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-03dbaughNF
no factor from 2^62 to 2^63
2011-11-03markrNF-PM1
B1=210000, B2=4987500, E=6
2011-10-31markrNF
no factor from 2^61 to 2^62
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=191250
2009-04-07S485122NF
no factor from 2^60 to 2^61