Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
7246417Factored
FactorDigitsBitsDate
34190301115521306368395960419785304249739128.02023-02-26 03:17:37
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)1999-09-22Marco Tagliatti07A6E8A12D073ECC2458524
Verified (Factored)2002-03-10Darío Alejandro Guzik07A6E8A12D073ECC6157397
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-03-03krackerBBF72FD0683343E21249437653
P-1 factors
DateFactorB1B2
2023-02-26341903011155213063683959604197853042497200000016143964200
History
DateUserTypeResult
2023-03-04John AireyCERT
PRP Certification
Proof certified good
2023-03-03krackerC-PRP
M7246417/341903011155213063683959604197853042497 : BBF72FD0683343E2
PRP proof power = 8
PRP: Verified
Proof certified good
2023-02-26yoyorocks1F-PM1
Factor: 341903011155213063683959604197853042497 / (P-1, B1=2000000, B2=16143964200)
2022-01-01LuminescenceNF-PM1
B1=1000000, B2=2173404870
2021-12-26-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2021-08-25SRBaseNF
no factor from 2^70 to 2^71
2021-08-19SRBaseNF
no factor from 2^69 to 2^70
2020-03-13TJAOINF
no factor from 2^68 to 2^69
2020-02-15player_3236NF-PM1
B1=260000, B2=5005000, E=6
2018-08-03ramgeisNF
no factor from 2^67 to 2^68
2016-10-16Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-16VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-11David CampeauNF
no factor from 2^64 to 2^65
2012-08-15Squeeky_SquirrelNF-PM1
B1=90000, B2=1620000, E=6
2012-03-09David CampeauNF
no factor from 2^63 to 2^64