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
18188669Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1000000
B2 = 509085720
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2003-06-17Lanson Hunt8D2215E8667042A01474850
Bad2006-11-28John Arioni6163DFB92F5C3D8D10325002
Verified2008-12-28dswanson8D2215E8667042A011967974
History
DateUserTypeResult
2024-02-10alpertronNF-PM1
B1=1000000, B2=509085720
2021-11-13-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-08-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-11SRBaseNF
no factor from 2^70 to 2^71
2020-03-03lycornNF
no factor from 2^69 to 2^70
2017-09-12ramgeisNF
no factor from 2^68 to 2^69
2017-09-12ramgeisNF
no factor from 2^67 to 2^68
2014-08-16NesowaNF
no factor from 2^66 to 2^67
2008-12-28dswansonC-LL
8D2215E8667042A0