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
9874451Factored
FactorDigitsBitsDate
221005222545531444.3old
2400214234912182465432167.72022-08-07 09:49:06
ECM
DigitsB1Curves
255000060 / 280
Estimated T-Level: 21.1 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2020-09-13riccardo ubertiA3A36052EF03EB461139879053
Verified (Factored)2021-02-10Oliver KruseA3A36052EF03EB461754400253
Verified2022-08-08riccardo ubertiA3A36052EF03EB46269831653
History
DateUserTypeResult
2022-08-09riccardo ubertiNF-PP1
Start=6/5, B1=2300000, B2=60000000
2022-08-08Richard ThomasCERT
PRP Certification
Proof certified good
2022-08-08riccardo ubertiC-PRP
M9874451/22100522254553/240021423491218246543 : A3A36052EF03EB46
PRP proof power = 8
PRP: Verified
Proof certified good
2022-08-07riccardo ubertiF-PP1
Start=2/7, B1=2000000, Factor: 240021423491218246543
2021-02-10mhoneyCERT
PRP Certification
Proof certified good
2021-02-10Oliver KruseC-PRP
M9874451/22100522254553 : A3A36052EF03EB46
PRP proof power = 8
PRP: Verified (Factored)
Proof certified good
2020-09-13riccardo ubertiC-PRP
M9874451/22100522254553 : A3A36052EF03EB46
PRP: Verified (Factored)
PRP without proof (not generated)