Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
11717
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2026-03-30-anonymous-ECMC1S137.26 %2026-03-302026-03-31
Factored
FactorDigitsBitsDate
505302180661511445.5old
5440495829794791549.02008-08-26 19:58:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002114 / 9201
Estimated T-Level: 41.1
TF below 2^132 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 Kruse8A6EDE543BF37B452013
Verified
No proof (small exponent)
2017-10-12kkmrkkblmbrbk8A6EDE543BF37B4521114113
Verified
No proof (small exponent)
2020-04-17Oliver Kruse203BBC4B43EF20EC21014653
Verified
No proof (small exponent)
2024-07-01kkmrkkblmbrbk203BBC4B43EF20EC2650653
History
DateUserTypeResult
2025-03-13masserNF-PP1Start=85/43, B1=430000000, B2=429570000000
2025-03-02masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-22masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2024-07-01kkmrkkblmbrbkC-PRP
M11717/50530218066151/544049582979479 : 203BBC4B43EF20EC
2023-01-20-anonymous-NF-PM1B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRP
M11717/50530218066151/544049582979479 : 203BBC4B43EF20EC
2017-10-12kkmrkkblmbrbkC-PRPM11717/50530218066151/544049582979479 : 8A6EDE543BF37B45
2017-09-21Oliver KruseC-PRPM11717/50530218066151/544049582979479 : 8A6EDE543BF37B45
2017-09-21Oliver KruseC-PRPM11717/50530218066151/544049582979479 : 8A6EDE543BF37B45
2016-09-07kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2011-02-05Oscar ÖstlinFFactor: 544049582979479
2011-02-05Oscar ÖstlinFFactor: 27490944066751587360097515329
2008-08-26-anonymous-F-PM1Factor: 544049582979479
2000-04-19-anonymous-F-PM1Factor: 50530218066151
2000-03-22-anonymous-F-PM1Factor: 50530218066151
2000-01-25-anonymous-F-PM1Factor: 50530218066151