Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
8163283Factored
FactorDigitsBitsDate
73626360249089694971772272.62021-02-05 04:33:06
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-09-22Ray Strubinger62417B34A15B63E51542094
Verified (Factored)2002-08-24Ars Technica Team Prime Rib62417B34A15B63E51410086
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-02-07-Anonymous-5022EF193BD7882213351553
Verified2021-03-13Anton Repko5022EF193BD788221534516953
History
DateUserTypeResult
2021-04-15Ben DeloCERT
PRP Certification
Proof certified good
2021-03-14Simon JosefssonCERT
PRP Certification
Proof certified good
2021-03-13Anton RepkoC-PRP
M8163283/7362636024908969497177 : 5022EF193BD78822
PRP proof power = 8
PRP: Verified
Proof certified good
2021-02-07-Anonymous-C-PRP
M8163283/7362636024908969497177 : 5022EF193BD78822
PRP proof power = 8
PRP: Verified
Proof certified good
2021-02-05Smok_bmv F
Factor: 7362636024908969497177 / TF: 72-73*
2021-02-04Smok_bmv NF
no factor from 2^71 to 2^72
2021-02-04Smok_bmv NF
no factor from 2^70 to 2^71
2021-02-04Smok_bmv NF
no factor from 2^69 to 2^70
2020-01-24TJAOINF
no factor from 2^68 to 2^69
2018-07-09chuenkitNF
no factor from 2^67 to 2^68
2015-12-04snme2pm1NF
no factor from 2^66 to 2^67
2015-05-28snme2pm1NF
no factor from 2^65 to 2^66
2013-12-27David CampeauNF
no factor from 2^64 to 2^65
2013-09-20AxelssonNF
no factor from 2^63 to 2^64
2012-11-08NesowaNF-PM1
B1=100000, B2=1975000, E=6