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
65537
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2025-12-08philmooreECMC1S175.53 %2026-01-082026-01-29
2025-12-06philmooreECM2026-01-082026-01-29
2025-12-06philmooreECMC1S147.26 %2026-01-082026-01-29
2025-12-06philmooreECM2026-01-082026-01-29
2025-12-06philmooreECM2026-01-082026-01-29
2025-12-06philmooreECM2026-01-082026-01-29
2025-12-06philmooreECMC1S188.57 %2026-01-082026-01-29
2025-12-06philmooreECM2026-01-082026-01-29
Factored
FactorDigitsBitsDate
5136680178833263581192168.8old
8838523405657871640899231720873099.5old
18995755083394029790332301009768881013306396745147.12025-08-19 22:21:08
3233078207240245690392058441345133561744340482347154.52025-11-29 19:44:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000005734 / 16550
Estimated T-Level: 46.7 ⓘ
TF below 2^150 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver Kruse603F42D742C038FA2013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbk603F42D742C038FA2013
Factored
No proof (small exponent)
2017-12-07ATH603F42D742C038FA22168513
Factored
No proof (small exponent)
2020-04-17Oliver Kruse098FDD5162147B8821752053
Factored
No proof (small exponent)
2024-02-03Wentao Huang098FDD5162147B8824623653
Factored
No proof (small exponent)
2025-08-19philmoore098FDD5162147B8831077953
Verified
No proof (small exponent)
2025-11-29philmoore098FDD5162147B8841941053
History
DateUserTypeResult
2025-11-29philmooreC-PRPM65537/513668017883326358119/883852340565787164089923172087/189957550833940297903323010097688810133063967/32330782072402456903920584413451335617443404823 : 098FDD5162147B88
2025-11-29philmooreF-ECMFactor: 32330782072402456903920584413451335617443404823 / ECM curve 166, B1=44000000, B2=347636379090, Edwards Sigma=1132893305672365
2025-08-19philmooreC-PRPM65537/513668017883326358119/883852340565787164089923172087/189957550833940297903323010097688810133063967 : 098FDD5162147B88
2025-08-19philmooreF-ECMFactor: 189957550833940297903323010097688810133063967 / ECM curve 21, B1=11000000, B2=22329617310, Edwards Sigma=4871469411115704
2024-02-04masserNF-PP1Start=140/53, B1=25000000, B2=1775000000
2024-02-04masserNF-PP1Start=6/5, B1=25000000, B2=1775000000
2024-02-03Wentao HuangC-PRPM65537/513668017883326358119/883852340565787164089923172087 : 098FDD5162147B88
2023-07-07Alessandro CasiniNF-PP1Start=2/7, B1=500000000, B2=25500000000
2022-10-22George WoltmanNF-PM1B1=1000000000, B2=92381537348100
2020-04-17Oliver KruseC-PRPM65537/513668017883326358119/883852340565787164089923172087 : 098FDD5162147B88
2017-12-07ATHC-PRPM65537/513668017883326358119/883852340565787164089923172087 : 603F42D742C038FA
2017-10-02kkmrkkblmbrbkC-PRPM65537/513668017883326358119/883852340565787164089923172087 : 603F42D742C038FA
2017-09-21Oliver KruseC-PRPM65537/513668017883326358119/883852340565787164089923172087 : 603F42D742C038FA
2016-10-28kkmrkkblmbrbkNF-PM1B1=100000000, B2=2000000000, E=12
2007-04-07-anonymous-NF-PM1B1=1000000, B2=100000000, E=12
2006-11-09-anonymous-FFactor: 513668017883326358119
2006-05-29-anonymous-NF-PM1B1=1000000, B2=100000000, E=12
2005-01-10-anonymous-NF-PM1B1=50000000, B2=4290000000
2005-01-10-anonymous-NF-PM1B1=1000000, B2=100000000
2005-01-10-anonymous-NF-PM1B1=1000000, B2=100000000
2005-01-10-anonymous-NF-PM1B1=3000000, B2=300000000
2005-01-10-anonymous-NF-PM1B1=250000, B2=25000000
2003-11-28-anonymous-NF-PM1B1=16777216, B2=1677721600, E=12
2003-11-08-anonymous-NF-PM1B1=8388608, B2=838860800, E=12
2003-08-08-anonymous-NF-PM1B1=4194304, B2=419430400, E=12
2003-06-06-anonymous-NF-PM1B1=2097152, B2=209715200, E=12
2003-05-04-anonymous-NF-PM1B1=1048576, B2=104857600, E=48
2003-03-27-anonymous-NF-PM1B1=262144, B2=26214400, E=30
2003-02-02-anonymous-NF-PM1B1=131072, B2=13107200, E=30
2002-10-12-anonymous-NFno factor TF: 1-57
2002-07-20-anonymous-NF-PM1B1=65536, B2=6553600, E=12
2002-06-09-anonymous-NF-PM1B1=32768, B2=3276800
2002-04-28-anonymous-NF-PM1B1=16384, B2=1638400
2001-09-22-anonymous-NF-PM1B1=1000000, B2=100000000
2001-04-29-anonymous-NF-PM1B1=100000, B2=10000000
2000-11-15-anonymous-NFno factor TF: 1-56
2000-04-05-anonymous-NFno factor TF: 1-54
1999-10-15-anonymous-NFno factor TF: 52-53