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
16918357Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1700000
B2 = 4692388470
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2003-05-19Troy McFee7C8D1A2EB889D1AF1274502
Verified2007-01-01Patrik Johansson7C8D1A2EB889D1AF14236652
History
DateUserTypeResult
2024-09-24ThaNF-PM1
B1=1700000, B2=4692388470
2021-11-26-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-17-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-17lycornNF
no factor from 2^70 to 2^71
2020-05-17lycornNF
no factor from 2^69 to 2^70
2018-02-21ramgeisNF
no factor from 2^68 to 2^69
2018-02-21ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-09-21NesowaNF
no factor from 2^66 to 2^67