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
131071
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 269
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-01-04philmooreECMC25S150.98 %2026-02-102026-02-15
2026-01-04philmooreECMC24S252.94 %2026-02-102026-02-15
2026-01-04philmooreECMC25S13.13 %2026-02-102026-02-15
2026-01-04philmooreECMC25S134.70 %2026-02-102026-02-15
2026-01-04philmooreECMC25S174.05 %2026-02-102026-02-15
2026-01-04philmooreECMC26S166.21 %2026-02-102026-02-15
2026-01-04philmooreECMC24S268.63 %2026-02-102026-02-15
2026-01-04philmooreECMC25S149.62 %2026-02-102026-02-15
Factored
FactorDigitsBitsDate
231733529927.8old
642963547671135.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
551100000009277 / 40830
Estimated T-Level: 51.1 ⓘ
TF below 2^165 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse2ED0E16662911D4D2013
Verified
No proof (small exponent)
2017-10-13kkmrkkblmbrbk2ED0E16662911D4D29870413
Verified
No proof (small exponent)
2020-04-17Oliver KruseEFB488A9021E11C029757153
Verified
Certified Good
2024-02-03Wentao HuangEFB488A9021E11C0211705453
History
DateUserTypeResult
2025-07-13masserNF-PM1B1=1000000000, B2=161577954638100
2025-01-18Jorge CoveiroNFno factor TF: 68-69
2024-02-03Naegi MakotoCERT
Proof certified good
2024-02-03Wentao HuangC-PRPM131071/231733529/64296354767 : EFB488A9021E11C0
Proof Certified Good

Proof Power: 5

2021-08-27H MichaelsonNF-PP1Start=2/7, B1=20000000, B2=2000000000
2021-08-25H MichaelsonNF-PP1Start=2/7, B1=10000000, B2=1000000000
2021-08-25H MichaelsonNF-PP1Start=88/41, B1=1050000, B2=105000000
2020-04-17Oliver KruseC-PRPM131071/231733529/64296354767 : EFB488A9021E11C0
2017-10-13kkmrkkblmbrbkC-PRPM131071/231733529/64296354767 : 2ED0E16662911D4D
2017-09-21Oliver KruseC-PRPM131071/231733529/64296354767 : 2ED0E16662911D4D
2017-09-21Oliver KruseC-PRPM131071/231733529/64296354767 : 2ED0E16662911D4D
2017-03-23kkmrkkblmbrbkNF-PM1B1=100000000, B2=2000000000, E=12
2006-10-01-anonymous-C-LL4AEF68EEEBF7C1__
2006-01-15-anonymous-C-LL4AEF68EEEBF7C1__
2005-09-03-anonymous-C-LL4AEF68EEEBF7C1__
2005-07-17-anonymous-C-LL4AEF68EEEBF7C1__
2005-07-01-anonymous-C-LL4AEF68EEEBF7C1__
2005-05-12-anonymous-C-LL4AEF68EEEBF7C1__
2005-04-11-anonymous-C-LL4AEF68EEEBF7C1__
2005-03-20-anonymous-C-LL4AEF68EEEBF7C1__
2005-02-02-anonymous-C-LL4AEF68EEEBF7C1__
2004-12-13-anonymous-C-LL4AEF68EEEBF7C1__
2004-12-13-anonymous-C-LL4AEF68EEEBF7C1__
2004-12-13-anonymous-C-LL4AEF68EEEBF7C1__
2004-11-03-anonymous-C-LL4AEF68EEEBF7C1__
2004-11-03-anonymous-C-LL4AEF68EEEBF7C1__
2004-08-20-anonymous-C-LL4AEF68EEEBF7C1__
2004-06-12-anonymous-C-LL4AEF68EEEBF7C1__
2004-01-07Fanchar LandagFFactor: 14899621191992882743
2003-12-13-anonymous-C-LL4AEF68EEEBF7C1__
2003-08-25-anonymous-C-LL4AEF68EEEBF7C1__
2003-01-25-anonymous-C-LL4AEF68EEEBF7C1__
2002-11-16-anonymous-C-LL4AEF68EEEBF7C1__
2002-05-18-anonymous-C-LL4AEF68EEEBF7C1__
2002-03-16-anonymous-C-LL4AEF68EEEBF7C1__
2002-03-16-anonymous-C-LL4AEF68EEEBF7C1__
2002-03-16-anonymous-C-LL4AEF68EEEBF7C1__
2002-03-16-anonymous-C-LL4AEF68EEEBF7C1__
2002-03-16-anonymous-C-LL4AEF68EEEBF7C1__
2002-01-15-anonymous-C-LL4AEF68EEEBF7C1__
2001-12-22-anonymous-C-LL4AEF68EEEBF7C1__
2001-12-22Gimps-frC-LL4AEF68EEEBF7C1__
2001-12-22-anonymous-C-LL4AEF68EEEBF7C1__
2001-12-22-anonymous-C-LL4AEF68EEEBF7C1__
2001-12-22-anonymous-C-LL4AEF68EEEBF7C1__
2001-12-01-anonymous-C-LL4AEF68EEEBF7C1__
2001-12-01AxelFoxC-LL4AEF68EEEBF7C1__
2001-11-24Gimps-frC-LL4AEF68EEEBF7C1__
2001-11-14Gimps-frC-LL4AEF68EEEBF7C1__
2001-11-14-anonymous-C-LL4AEF68EEEBF7C1__
2001-03-11frigoC-LL4AEF68EEEBF7C1__
2001-02-25-anonymous-C-LL4AEF68EEEBF7C1__
2001-02-18-anonymous-C-LL4AEF68EEEBF7C1__
2000-12-31-anonymous-C-LL4AEF68EEEBF7C1__
2000-11-25-anonymous-C-LL4AEF68EEEBF7C1__
2000-10-28-anonymous-C-LL4AEF68EEEBF7C1__
2000-10-28-anonymous-C-LL4AEF68EEEBF7C1__
2000-07-25-anonymous-C-LL4AEF68EEEBF7C1__
2000-05-31-anonymous-C-LL4AEF68EEEBF7C1__
2000-01-04-anonymous-NF-PM1B1=1000000, B2=100000000
1999-10-21-anonymous-C-LL4AEF68EEEBF7C1__
1999-09-30Alex KruppaFFactor: 14899621191992882743
1999-04-13-anonymous-C-LL4AEF68EEEBF7C1__
1999-02-21-anonymous-C-LL4AEF68EEEBF7C1__
1999-01-02-anonymous-C-LL4AEF68EEEBF7C1__