Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
6163
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-02-22Graham BarnesECM2026-02-222026-02-24
Factored
FactorDigitsBitsDate
591649619.2old
6170870093085777840792169.1old
114215122522923479135354237112993.2old
3163426589413094102060293301041695135114.62016-11-21 04:16:25
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000003472 / 16550
Estimated T-Level: 46.0 ⓘ
TF below 2^148 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-20kkmrkkblmbrbkB8CF24806A41D89B4013
Verified
No proof (small exponent)
2017-09-25George WoltmanB8CF24806A41D89B466213
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbkB8CF24806A41D89B4013
Verified
No proof (small exponent)
2020-04-17Oliver Kruse3710DF041C3FA39B4154953
Verified
No proof (small exponent)
2024-02-03Wentao Huang3710DF041C3FA39B4329053
History
DateUserTypeResult
2025-03-18masserNF-PP1Start=123/47, B1=1000000000, B2=999000000000
2025-03-09masserNF-PP1Start=6/5, B1=1000000000, B2=999000000000
2025-03-01masserNF-PP1Start=2/7, B1=1000000000, B2=999000000000
2024-02-03Wentao HuangC-PRPM6163/591649/617087009308577784079/11421512252292347913535423711/31634265894130941020602933010416951 : 3710DF041C3FA39B
2023-07-30-anonymous-NF-PM1B1=40000000000, B2=169617550478676300
2021-07-09ViliamFNF-PM1B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRPM6163/591649/617087009308577784079/11421512252292347913535423711/31634265894130941020602933010416951 : 3710DF041C3FA39B
2017-10-02kkmrkkblmbrbkC-PRPM6163/591649/617087009308577784079/11421512252292347913535423711/31634265894130941020602933010416951 : B8CF24806A41D89B
2017-09-25George WoltmanC-PRPM6163/known_factors : B8CF24806A41D89B
2017-09-20kkmrkkblmbrbkC-PRPM6163/591649/617087009308577784079/11421512252292347913535423711/31634265894130941020602933010416951 : B8CF24806A41D89B
2016-11-21kkmrkkblmbrbkF-ECMFactor: 31634265894130941020602933010416951