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
4567
Composite: proven not-prime with Lucas-Lehmer test
No factors below 266
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-01-03MannImMondECM2026-01-082026-01-28
2026-01-03MannImMondECM2026-01-082026-01-24
2026-01-03MannImMondECM2026-01-082026-01-19
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
2025-07-15PhyxickECM2025-07-151970-01-01
P-1
B1 = 3000000000000
B2 = 9003842338903041630
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000040830 / 40830
6026000000023237 / 105362
Estimated T-Level: 56.1 ⓘ
TF below 2^181 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
VerifiedUnknown78B70Unknown,(aka U)
VerifiedGeorge Woltman956CA809D42FF8B70Woltman,Prime95,first web release,(aka W4)
VerifiedBrian J. Beesley956CA809D42FF8B70Mac,John Sweeney,v1.4,(aka J3)
Verified2015-04-11MadPoo 🙂956CA809D42FF8B72943Windows 64-bit,Prime95,v26,(aka We4)
History
DateUserTypeResult
2025-10-10One ManNF-PM1B1=941150573466, B2=1193404405360617450
2025-01-27-anonymous-NF-PM1B1=3000000000000, B2=9003842338903041630
2023-08-15masserNF-PP1Start=6/5, B1=1990000000, B2=356210000000
2023-07-10masserNF-PP1Start=152/17, B1=1990000000, B2=79600000000
2023-05-25-anonymous-NF-PM1B1=70000000000, B2=701928325533134700
2022-06-19Anton RepkoNFno factor TF: 64-66
2021-05-12ATHNF-PP1Start=2/7, B1=1000000000, B2=241000000000
2021-02-06Ruslan BorisovNFno factor TF: 64-65
2018-07-17snme2pm1NFno factor TF: 63-64
2016-12-15snme2pm1NFno factor TF: 62-63
2016-02-23LaurVNFno factor TF: 57-58
2015-06-17Sid & AndyNFno factor TF: 61-62
2015-04-11MadPoo 🙂C-LL956CA809D42FF8B7
2012-09-29bcp19NFno factor TF: 60-61
2011-02-02monstNFno factor TF: 58-60
2009-09-22James HintzNF-PM1B1=123456789012, B2=1234567890123, E=12
2003-01-09-anonymous-NFno factor TF: 1-57
2003-01-09-anonymous-NF-PM1B1=4290000000
2002-09-22-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-10-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-02-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2001-07-07-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-17-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-08-17-anonymous-NFno factor TF: 1-56
2000-02-16-anonymous-NFno factor TF: 54-55
1999-12-30-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53