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:





MnDetails
2267
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-02-27Kamil GorskiECMC45S223.48 %2026-03-092026-03-12
2024-01-13MannImMondPM1-SS166.65 %2026-03-082027-01-27
P-1
B1 = 6000000000000
B2 = 9223372036854775807
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
60260000000105362 / 105362
65800000000172068 / 194238
Estimated T-Level: 64.4
TF below 2^209 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown763B0Unknown,(aka U)
VerifiedGeorge Woltman32C3D9D29314763B0Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. Beesley32C3D9D29314763B0Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂32C3D9D29314763B2142Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2026-01-25ViliamFNF-PP1Start=2/7, B1=10000000000000
2025-07-26BloodIceNF-PP1Start=2/7, B1=40000000000, B2=4000000000000
2025-07-17ViliamFNF-PP1Start=6/5, B1=50000000000, B2=5000000000000
2025-07-14ViliamFNF-PP1Start=2/7, B1=50000000000, B2=5000000000000
2024-10-18-anonymous-NF-PM1B1=6000000000000, B2=1.4001161951512E+19
2023-08-09masserNF-PP1Start=6/5, B1=4400000000, B2=787600000000
2023-07-16masserNF-PP1Start=124/23, B1=4400000000, B2=176000000000
2023-06-29masserNF-PM1B1=216000000000, B2=486755758363664790
2023-03-11musava_ribicaNF-PM1B1=7777777777, B2=175589738374050
2022-04-11Anton RepkoNFno factor TF: 64-66
2021-05-12ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2020-12-30Ruslan BorisovNFno factor TF: 64-65
2017-10-01snme2pm1NFno factor TF: 63-64
2017-05-18James HintzNF-PM1B1=3110843330147, B2=248867466411760, E=12
2016-06-20snme2pm1NFno factor TF: 62-63
2015-07-09MadPoo 🙂NF-PM1B1=1679699495213, B2=10000000000000, E=12
2015-06-22treborNF-PM1B1=100000000000, B2=10000000000000, E=12
2015-05-04snme2pm1NFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LL
32C3D9D29314763B
2013-04-06Le ComteNF-PM1B1=100000000000
2012-04-16bcp19NFno factor TF: 60-61
2010-12-17monstNFno factor TF: 59-60
2008-12-24Matthias WurtingerNF-PM1B1=20000000000, B2=2000000000000, E=12
2005-04-02garyfuNFno factor TF: 1-59
2002-12-25-anonymous-NF-PM1B1=4290000000
2002-10-26Alex KruppaNFno factor TF: 1-57
2002-09-14-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-03-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2001-05-27-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-07-25-anonymous-NFno factor TF: 1-56
2000-05-05-anonymous-NFno factor TF: 1-52
2000-01-25-anonymous-NFno factor TF: 54-55
1999-09-14-anonymous-NFno factor TF: 50-53