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
1973467Factored
FactorDigitsBitsDate
272338447928.0old
86398385271033.02008-07-15 07:48:51
5197520037911238.92008-07-15 07:48:51
336519338763457828213672374.82022-04-15 10:37:31
ECM
DigitsB1Curves
2550000280 / 280
3025000059 / 640
Estimated T-Level: 25.5
TF below 2^80 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver KruseDCA125DA050B601E3013
Verified (Factored)2017-11-12kkmrkkblmbrbkDCA125DA050B601E3127681413
Verified2022-04-17_p95holder_4B6A458126A3DF24460625453
Verified2022-04-22XZT4B6A458126A3DF244156258753
History
DateUserTypeResult
2023-12-18USAFSSNF-PM1
B1=480000, B2=460965960
2022-08-12USAFSSNF-PM1
B1=132000, B2=134381520
2022-04-22lozcsCERT
PRP Certification
Proof certified good
2022-04-22XZTC-PRP
M1973467/272338447/519752003791/8639838527/33651933876345782821367 : 4B6A458126A3DF24
PRP proof power = 7
PRP: Verified
Proof certified good
2022-04-17_p95holder_C-PRP
M1973467/272338447/519752003791/8639838527/33651933876345782821367 : 4B6A458126A3DF24
PRP: Verified
PRP without proof (not generated)
2022-04-15_p95holder_F-ECM
Factor: 33651933876345782821367 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-12kkmrkkblmbrbkC-PRP
M1973467/272338447/519752003791/8639838527 : DCA125DA050B601E
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1973467/272338447/519752003791/8639838527 : DCA125DA050B601E
PRP: Verified
PRP without proof (not generated)
2008-07-15J FeitsmaF
Factor: 8639838527
2008-07-15J FeitsmaF
Factor: 519752003791