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

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MnStatusDetails
6919607Factored
FactorDigitsBitsDate
30741264384981994566341032581.32021-11-29 06:42:15
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)1999-03-26S0573019129FBBCAEE2E7E0
Verified (Factored)2002-03-31Keith Mitchell19129FBBCAEE2E7E4137959
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-12-05LaurVFA2CD6E8BBF495541393649853
P-1 factors
DateFactorB1B2
2021-11-2930741264384981994566341034000000456705480
History
DateUserTypeResult
2021-12-05Liang LiCERT
PRP Certification
Proof certified good
2021-12-05LaurVC-PRP
M6919607/3074126438498199456634103 : FA2CD6E8BBF49554
PRP proof power = 8
PRP: Verified
Proof certified good
2021-11-29Seth_TrF-PM1
Factor: 3074126438498199456634103 / (P-1, B1=4000000, B2=456705480)
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-11SRBaseNF
no factor from 2^70 to 2^71
2021-07-18takahashiNF
no factor from 2^69 to 2^70
2020-05-15TJAOINF
no factor from 2^68 to 2^69
2020-01-11takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-02Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-17lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-11-22James HeinrichNF-PM1
B1=130000, B2=2665000, E=6