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
4721467Factored
FactorDigitsBitsDate
5922338514604971549.1old
129553853030380755464667372683.42023-09-20 06:16:56
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-11-19kkmrkkblmbrbkA8DE7F17A299A34D1438817853
Verified (Factored)2018-03-10ATHA8DE7F17A299A34D117877353
Verified2023-09-20Naegi MakotoA8DE7F17A299A34D298087653
P-1 factors
DateFactorB1B2
2023-09-201295538530303807554646673724000089285700
History
DateUserTypeResult
2023-09-21bakudanchanCERT
PRP Certification
Proof certified good
2023-09-20Naegi MakotoC-PRP
M4721467/592233851460497/12955385303038075546466737 : A8DE7F17A299A34D
PRP proof power = 7
PRP: Verified
Proof certified good
2023-09-20USAFSSF-PM1
Factor: 12955385303038075546466737 / (P-1, B1=240000, B2=89285700)
2019-04-24manrusNF
no factor from 2^67 to 2^68
2019-04-24manrusNF
no factor from 2^66 to 2^67
2019-04-24manrusNF
no factor from 2^65 to 2^66
2019-04-24manrusNF
no factor from 2^64 to 2^65
2019-04-24manrusNF
no factor from 2^63 to 2^64
2019-04-24manrusF
Factor: 592233851460497 / TF: 1-63
2018-03-10ATHC-PRP
M4721467/592233851460497 : A8DE7F17A299A34D
PRP: Verified (Factored)
PRP without proof (not generated)
2017-11-19kkmrkkblmbrbkC-PRP
M4721467/592233851460497 : A8DE7F17A299A34D
PRP: Verified (Factored)
PRP without proof (not generated)