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
11956037Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 6189107
B2 = 185673210
ECM
DigitsB1Curves
255000087 / 280
Estimated T-Level: 21.6 ⓘ
LL
StatusDateUserResidueShift
Verified2001-05-27JV van Zyl6E9D43020BB732571775640
Verified2004-08-06slow gamma repeator6E9D43020BB732575098299
History
DateUserTypeResult
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2022-09-19Architects CubedNF
no factor from 2^71 to 2^72
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-11LaurVNF-PM1
B1=6189107, B2=185673210
2021-08-05LaurVNF-PP1
Start=2/7, B1=5000000, B2=300000000
2021-07-13LaurVNF-PM1
B1=4316189, B2=127521607
2021-05-19lycornNF
no factor from 2^69 to 2^70
2018-01-18ramgeisNF
no factor from 2^68 to 2^69
2018-01-18ramgeisNF
no factor from 2^67 to 2^68
2016-04-21ThaNF-PM1
B1=300000, B2=6000000, E=6
2016-03-06YxinityNF
no factor from 2^66 to 2^67
2013-10-20NesowaNF
no factor from 2^65 to 2^66
2013-10-07lycornNF
no factor from 2^64 to 2^65