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
2422073Factored
FactorDigitsBitsDate
73964688393711413031962.72010-11-12 16:09:49
12007388222525768758872270.02018-07-23 17:25:47
ECM
DigitsB1Curves
255000064 / 280
Estimated T-Level: 21.1
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John Lloyd9A55B8870EFE71130
Verified (Factored)1999-03-15Louis Towles9A55B8870EFE71131882119
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-13Oliver Kruse0CCAD88A807B96FD1157700753
Verified (Factored)2017-11-27kkmrkkblmbrbk0CCAD88A807B96FD1110198653
Verified2018-07-23_p95holder_0CCAD88A807B96FD2122225553
P-1 factors
DateFactorB1B2
2018-07-231200738822252576875887200000060000000
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2018-07-23_p95holder_C-PRP
M2422073/7396468839371141303/1200738822252576875887 : 0CCAD88A807B96FD
PRP: Verified
PRP without proof (not generated)
2018-07-23alpertronF-PM1
Factor: 1200738822252576875887 / (P-1, B1=2000000, B2=60000000, E=12)
2017-11-27kkmrkkblmbrbkC-PRP
M2422073/7396468839371141303 : 0CCAD88A807B96FD
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2422073/7396468839371141303 : 0CCAD88A807B96FD
PRP: Verified
PRP without proof (not generated)
2010-11-12Oscar ÖstlinF-PM1
Factor: 7396468839371141303
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61