Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1916741Factored
FactorDigitsBitsDate
56275515771032.4old
145122867303124312713612373.62021-04-19 14:37:21
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-30alpertronDCC7C0C3948EE9791013
Verified (Factored)2017-10-20Oliver KruseDCC7C0C3948EE979152733013
Verified2021-04-19XZTC8B55F9F046C29E32122413553
History
DateUserTypeResult
2021-04-19Ben DeloCERT
PRP Certification
Proof certified good
2021-04-19XZTC-PRP
M1916741/5627551577/14512286730312431271361 : C8B55F9F046C29E3
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-19MarkSF-ECM
Factor: 14512286730312431271361 / (ECM curve 19, B1=50000, B2=5000000, Sigma=2292409068493992)
2017-10-20Oliver KruseC-PRP
M1916741/5627551577 : DCC7C0C3948EE979
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1916741/5627551577 : DCC7C0C3948EE979
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12