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
233423Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 267
TF target 244
TF below 2^114 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 129000000
B2 = 5330431966860
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
403000000662 / 4588
Estimated T-Level: 35.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown12120
VerifiedJohn SweeneyE070923C92FC12120
VerifiedMike GachE070923C92FC12120
VerifiedEivind TrielE070923C92FC1212166785
Verified2016-06-01MadPooE070923C92FC121252810
History
DateUserTypeResult
2025-08-06tim sNF
no factor from 2^66 to 2^67
2023-02-13masserNF-PP1
Start=6/5, B1=30000000, B2=990000000
2023-02-05masserNF-PP1
Start=2/7, B1=30000000, B2=990000000
2023-02-05masserNF-PP1
Start=150/71, B1=30000000, B2=960000000
2022-06-04Sid & AndyNF-PM1
B1=129000000, B2=5330431966860
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-12-21Gordon SpenceNF
no factor from 2^65 to 2^66
2019-04-11alexNF-PM1
B1=100000000, B2=2000000000, E=12
2018-03-07Gordon SpenceNF
no factor from 2^64 to 2^65
2016-06-01MadPooC-LL
E070923C92FC1212
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-01-10Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-10Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-15snme2pm1NF
no factor from 2^61 to 2^62
2014-01-31axnNF-PM1
B1=42841000, B2=1713630000, E=12
2013-07-18lycornNF
no factor from 2^60 to 2^61
2012-02-17JossNF-PM1
B1=2739081
2011-07-24JossNF-PM1
B1=2191265
2009-01-31Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-02Sturle SundeNF
no factor from 2^58 to 2^59