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
6917497Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 267
P-1
B1 = 5416000
B2 = 55331566290
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Verified1999-06-26John Guin7A2038D458D90E78966578
Verified2001-10-25Daniel Kebert7A2038D458D90E784302704
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-12-11mhoneyfactor ECM smallC1S20.00 % 2025-12-13
History
DateUserTypeResult
2025-06-24Jason LynchNF-PM1
B1=5416000, B2=55331566290
2021-12-02Seth_TrNF-PM1
B1=4000000, B2=414323910
2021-11-24Seth_TrNF-PM1
B1=4000000, B2=110000000, E=12
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
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
2020-01-10takahashiNF-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
2011-11-20James HeinrichNF-PM1
B1=130000, B2=2665000, E=6