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
6908383TF
No factors below 272
TF target 267
P-1
B1 = 4000000
B2 = 414323910
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
LL
StatusDateUserResidueShift
Verified2000-01-12Pieter Heij7A1A48FBBCB0924A6510182
Verified2001-10-06Alex Ivanov7A1A48FBBCB0924A6779466
History
DateUserTypeResult
2021-11-30Seth_TrNF-PM1
B1=4000000, B2=414323910
2021-11-22Seth_TrNF-PM1
B1=4000000, B2=110000000, E=12
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2020-12-21takahashiNF
no factor from 2^69 to 2^70
2020-01-09takahashiNF-PM1
B1=600000, B2=12000000, E=12
2020-01-06mnd9NF
no factor from 2^68 to 2^69
2018-05-23ramgeisNF
no factor from 2^67 to 2^68
2016-04-01Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-21VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-18lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-11-21James HeinrichNF-PM1
B1=130000, B2=2665000, E=6