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
7469431Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 267
P-1
B1 = 3100000
B2 = 12488065590
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Verified1999-12-23Saint John's University2EB2032EE2DD04E2783787
Verified2002-05-25Stephen Wood2EB2032EE2DD04E26311321
History
DateUserTypeResult
2023-05-06DRobinsonPENF-PM1
B1=3100000, B2=12488065590
2021-09-30SRBaseNF
no factor from 2^71 to 2^72
2016-05-24ramgeisNF
no factor from 2^70 to 2^71
2016-05-24ramgeisNF
no factor from 2^69 to 2^70
2016-05-24ramgeisNF
no factor from 2^68 to 2^69
2016-05-19america64NF
no factor from 2^67 to 2^68
2016-05-19america64NF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2013-11-26David CampeauNF
no factor from 2^64 to 2^65
2013-10-24NesowaNF
no factor from 2^63 to 2^64
2012-02-05Carsten KossendeyNF-PM1
B1=475000, B2=14725000, E=12