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
17956339Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 2000000
B2 = 708239700
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2003-02-16Otway Health & Community Services345C5FC2C8328BB61488527
Verified2007-04-07Kai Katzur345C5FC2C8328BB616446740
History
DateUserTypeResult
2024-10-04masserNF-PM1
B1=2000000, B2=708239700
2022-01-11TheJudgerNF
no factor from 2^73 to 2^74
2022-01-07RichD0NF
no factor from 2^72 to 2^73
2021-09-21-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-10SRBaseNF
no factor from 2^70 to 2^71
2020-03-20lycornNF
no factor from 2^69 to 2^70
2018-02-18ramgeisNF
no factor from 2^68 to 2^69
2018-02-18ramgeisNF
no factor from 2^67 to 2^68
2016-03-20Mark RoseNF
no factor from 2^66 to 2^67