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
1774757Factored
FactorDigitsBitsDate
181167194571134.1old
4033617804370941598812168.52020-09-09 04:38:26
39027680542552730831212271.72015-06-11 21:50:10
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 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)2017-09-30alpertronB3CCD3FA40DBE0B22013
Verified (Factored)2017-10-19Oliver KruseB3CCD3FA40DBE0B2286858213
Verified2020-09-11Klaus NordmannEC2EA7E3B5637FEE3102955253
Verified2020-11-11Oliver KruseEC2EA7E3B5637FEE3127028753
P-1 factors
DateFactorB1B2
2015-06-11390276805425527308312150000015000000
History
DateUserTypeResult
2020-11-11C.D.B.CERT
PRP Certification
Proof certified good
2020-11-11Oliver KruseC-PRP
M1774757/18116719457/403361780437094159881/3902768054255273083121 : EC2EA7E3B5637FEE
PRP proof power = 7
PRP: Verified
Proof certified good
2020-09-11Klaus NordmannC-PRP
M1774757/18116719457/3902768054255273083121/403361780437094159881 : EC2EA7E3B5637FEE
PRP proof power = 7
PRP: Verified
PRP proof never uploaded
2020-09-09Chang Chia-TcheF-ECM
Factor: 403361780437094159881 / (ECM curve 3, B1=50000, B2=5000000)
2017-10-19Oliver KruseC-PRP
M1774757/18116719457/3902768054255273083121 : B3CCD3FA40DBE0B2
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1774757/18116719457/3902768054255273083121 : B3CCD3FA40DBE0B2
PRP: Verified (Factored)
PRP without proof (not generated)
2015-06-11alpertronF-PM1
Factor: 3902768054255273083121 / (P-1, B1=500000, B2=15000000, E=12)