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
2009831Factored
FactorDigitsBitsDate
4019663721.9old
638709087180348089207032375.82021-08-02 07:56:44
ECM
DigitsB1Curves
2550000280 / 280
30250000118 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse2FE7488CFBAF70041013
Verified (Factored)2017-11-13kkmrkkblmbrbk2FE7488CFBAF70041128985513
Verified2021-08-02SRJ287783D9C09CDA50F4E7297277753
History
DateUserTypeResult
2021-08-02danc2CERT
PRP Certification
Proof certified good
2021-08-02SRJ2877C-PRP
M2009831/4019663/63870908718034808920703 : 83D9C09CDA50F4E7
PRP proof power = 7
PRP: Verified
Proof certified good
2021-08-02_p95holder_F-ECM
Factor: 63870908718034808920703 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-13kkmrkkblmbrbkC-PRP
M2009831/4019663 : 2FE7488CFBAF7004
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M2009831/4019663 : 2FE7488CFBAF7004
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12