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
1912133Factored
FactorDigitsBitsDate
419139553611135.3old
5151424671439441371858.82015-09-25 11:24:16
58839608406637371532492272.32021-03-02 14:55:15
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 Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse65837CBFB9505DBA2013
Verified (Factored)2017-11-09kkmrkkblmbrbk65837CBFB9505DBA2155610413
Verified2021-03-03mrhB1758D146181D4BB3116302953
P-1 factors
DateFactorB1B2
2015-09-2551514246714394413750000015000000
History
DateUserTypeResult
2021-07-03Dylan DelgadoNF-PM1
B1=2000000, B2=262000000
2021-04-07Dylan DelgadoNF-PM1
B1=1000000, B2=71000000
2021-03-03curtiscCERT
PRP Certification
Proof certified good
2021-03-03mrhC-PRP
M1912133/41913955361/515142467143944137/5883960840663737153249 : B1758D146181D4BB
PRP proof power = 7
PRP: Verified
Proof certified good
2021-03-02_p95holder_F-ECM
Factor: 5883960840663737153249 / (ECM curve 7, B1=50000, B2=5000000)
2017-11-09kkmrkkblmbrbkC-PRP
M1912133/41913955361/515142467143944137 : 65837CBFB9505DBA
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1912133/41913955361/515142467143944137 : 65837CBFB9505DBA
PRP: Verified (Factored)
PRP without proof (not generated)
2015-09-25alpertronF-PM1
Factor: 515142467143944137 / (P-1, B1=500000, B2=15000000, E=12)