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
11596021Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 2500000
B2 = 7054972470
ECM
DigitsB1Curves
255000065 / 280
Estimated T-Level: 21.2 ⓘ
LL
StatusDateUserResidueShift
Verified2001-01-28Frank Klausner52601CC84120B5271641869
Verified2004-08-06Lawrence Cairns-Smith52601CC84120B5278487489
History
DateUserTypeResult
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2024-05-07linamentNF-PM1
B1=2500000, B2=7054972470
2024-05-06linamentNF-PM1
B1=2500000
2023-02-01riccardo ubertiNF-PP1
Start=6/5, B1=2300000, B2=48000000
2023-01-24riccardo ubertiNF-PP1
Start=2/7, B1=2000000, B2=40000000
2023-01-12riccardo ubertiNF-PM1
B1=1500000, B2=102234990
2023-01-09riccardo ubertiNF
no factor from 2^71 to 2^72
2021-10-12mikrNF
no factor from 2^69 to 2^71
2021-10-11lycornNF
no factor from 2^69 to 2^70
2018-01-01ramgeisNF
no factor from 2^68 to 2^69
2018-01-01ramgeisNF
no factor from 2^67 to 2^68
2016-03-02YxinityNF
no factor from 2^66 to 2^67
2014-12-23ThaNF-PM1
B1=300000, B2=6000000, E=6
2014-12-20NesowaNF
no factor from 2^65 to 2^66
2013-11-06lycornNF
no factor from 2^64 to 2^65