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:










MnStatusDetails
2715571Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
764487547931136.2old
63128939636789339009532272.42024-08-19 19:40:21
ECM
DigitsB1Curves
255000079 / 280
Estimated T-Level: 21.4
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-19Oliver KruseC4C3A2FFEDE800C61193343753
Verified (Factored)2017-12-05kkmrkkblmbrbkC4C3A2FFEDE800C6138099353
Verified2024-08-19Joey PeepsC4C3A2FFEDE800C62145470753
History
DateUserTypeResult
2024-08-19Luke DurantCERT
PRP Certification
Proof certified good
2024-08-19Joey PeepsC-PRP
M2715571/76448754793/6312893963678933900953 : C4C3A2FFEDE800C6
PRP proof power = 7
PRP: Verified
Proof certified good
2024-08-19Joey PeepsF-ECM
Factor: 6312893963678933900953 / (ECM curve 9, B1=50000, B2=60054225, Edwards Sigma=6936947839261058)
2024-08-18timc995NF-PM1
B1=2000000, B2=2947155750
2022-10-27USAFSSNF-PM1
B1=340000, B2=271226340
2017-12-05kkmrkkblmbrbkC-PRP
M2715571/76448754793 : C4C3A2FFEDE800C6
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-19Oliver KruseC-PRP
M2715571/76448754793 : C4C3A2FFEDE800C6
PRP: Verified (Factored)
PRP without proof (not generated)