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

PrimeNet Exponent Status

Exponent Range:





MnDetails
2117651
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
343059463928.4old
36254185131031.82008-07-14 20:20:34
ECM
DigitsB1Curves
2550000280 / 280
30250000164 / 640
Estimated T-Level: 26.3 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP
StatusProofDateUserResidueShiftTypeBase
Factored
Certified Good
Power=7
2026-09-16Jason Lynch53D49BED5A535E4C44185213
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-07Oliver Kruse1159A86E7441AC302013
Verified
PRP without proof (not generated)
2017-11-17kkmrkkblmbrbk1159A86E7441AC302111802413
History
DateUserTypeResult
2026-09-16ANONYMOUSCERT
Proof certified good
2026-09-16Jason LynchC-PRP53D49BED5A535E4C
Proof Certified Good

Proof Power: 7

2017-11-17kkmrkkblmbrbkC-PRP
M2117651/343059463/3625418513 : 1159A86E7441AC30
2017-10-07Oliver KruseC-PRPM2117651/343059463/3625418513 : 1159A86E7441AC30
2016-03-26alpertronNF-PM1B1=500000, B2=15000000, E=12
2008-07-14George WoltmanF-ECMFactor: 3625418513