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
9227
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-02-22ANONYMOUSECM2026-02-222026-02-26
P-1
B1 = 240721673223
B2 = 161495243834444520
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000010716 / 40830
Estimated T-Level: 51.3 ⓘ
TF below 2^165 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown0F7F0Unknown,(aka U)
VerifiedGeorge Woltman5A03908C6C8A0F7F0Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. Beesley5A03908C6C8A0F7F0Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂5A03908C6C8A0F7F1839Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2026-02-10One ManNF-PM1B1=240721673223, B2=161495243834444520
2023-08-19masserNF-PP1Start=6/5, B1=900000000, B2=161100000000
2023-07-10JacobZNF-PM1B1=63000000000, B2=260683432927717800
2023-07-10masserNF-PP1Start=150/17, B1=900000000, B2=36000000000
2022-06-06Anton RepkoNFno factor TF: 64-66
2021-05-12ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-01-02Ruslan BorisovNFno factor TF: 64-65
2018-08-19snme2pm1NFno factor TF: 63-64
2016-11-13-anonymous-NF-PM1B1=100000000000, B2=1000000000000, E=12
2016-10-14snme2pm1NFno factor TF: 62-63
2016-06-01mikrNF-PM1B1=50000000000, B2=3200000000000, E=12
2016-05-19-anonymous-NF-PM1B1=10000000000, B2=100000000000, E=12
2016-02-23LaurVNFno factor TF: 57-58
2015-04-11MadPoo 🙂C-LL5A03908C6C8A0F7F
2015-04-03snme2pm1NFno factor TF: 61-62
2015-02-06JayderNF-PM1B1=1308096280, B2=81101969375, E=12
2012-11-08bcp19NFno factor TF: 60-61
2010-07-20George WoltmanNFno factor TF: 59-60
2010-07-20George WoltmanNFno factor TF: 58-59
2003-03-07-anonymous-NF-PM1B1=4290000000
2002-12-09-anonymous-NFno factor TF: 1-57
2002-11-02-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-09-07-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-15-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2001-09-22-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-30-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-07-17-anonymous-NFno factor TF: 1-56
2000-03-01-anonymous-NFno factor TF: 54-55
1999-12-30-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53