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
106859Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 267
TF target 244
TF below 2^117 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000000
B2 = 670648185176970
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001656 / 4588
Estimated T-Level: 36.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown698E0
VerifiedMike Gach4385BCF395BA698E0
VerifiedBrian J. Beesley4385BCF395BA698E0
VerifiedEivind Triel4385BCF395BA698E71168
Verified2016-06-01MadPoo4385BCF395BA698E5116
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-10-05-Anonymous-factor ECM smallC1S20.00 % 2025-10-06
2025-08-28-Anonymous-factor ECM small0.00 % 2025-08-28
History
DateUserTypeResult
2023-08-31masserNF-PP1
Start=139/19, B1=60000000, B2=4740000000
2023-03-05masserNF-PP1
Start=6/5, B1=60000000, B2=2100000000
2023-02-19Oliver KruseNF-PM1
B1=10000000000, B2=670648185176970
2023-02-18JossNF-PM1
B1=1000000, B2=370915575030
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-04-21Oliver KruseNF-PP1
Start=2/7, B1=10000000, B2=4000000000
2020-01-28Gordon SpenceNF
no factor from 2^66 to 2^67
2019-05-27YxinityNF
no factor from 2^65 to 2^66
2018-05-17chuenkitNF
no factor from 2^64 to 2^65
2018-03-01mikrNF-PM1
B1=1000000000, B2=60000000000, E=12
2016-06-01MadPooC-LL
4385BCF395BA698E
2016-03-01Gordon SpenceNF
no factor from 2^63 to 2^64
2016-03-01Gordon SpenceNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-11-18lycornNF
no factor from 2^60 to 2^61
2012-12-05alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2009-01-31Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-06Sturle SundeNF
no factor from 2^58 to 2^59