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:










MnStatusDetails
1716937Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
133627129903004811753.6old
7876981175254352226536975992789.32023-02-28 09:48:27
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-02Kriesel96236FB8E036E668013
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-30alpertron44D2B18BAD3E43221013
Verified (Factored)2017-10-19Oliver Kruse44D2B18BAD3E432214234813
Verified2023-03-05Naegi Makoto96236FB8E036E668298153353
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
96236FB8E036E668
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2023-03-05Naegi MakotoCERT
PRP Certification
Proof certified good
2023-03-05Naegi MakotoC-PRP
M1716937/13362712990300481/787698117525435222653697599 : 96236FB8E036E668
PRP proof power = 7
PRP: Verified
Proof certified good
2023-02-28TJAOIF-ECM
Factor: 787698117525435222653697599 / (ECM curve 7, B1=250000, B2=40000000, Sigma=1229568971138805)
2017-10-19Oliver KruseC-PRP
M1716937/13362712990300481 : 44D2B18BAD3E4322
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1716937/13362712990300481 : 44D2B18BAD3E4322
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12