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
18933613Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 4048000
B2 = 10620620010
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2003-11-28Greg Yothers9FE30B818CBF7F8611775374
Verified2009-03-21S4851229FE30B818CBF7F8611918741
History
DateUserTypeResult
2024-09-15Jason LynchNF-PM1
B1=4048000, B2=10620620010
2022-01-04-Anonymous-NF
no factor from 2^73 to 2^74
2021-10-31-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-08-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-12SRBaseNF
no factor from 2^70 to 2^71
2020-01-17lycornNF
no factor from 2^69 to 2^70
2017-09-19ramgeisNF
no factor from 2^68 to 2^69
2017-09-19ramgeisNF
no factor from 2^67 to 2^68
2013-06-11Richard B. WoodsNF
no factor from 2^66 to 2^67
2009-03-21S485122C-LL
9FE30B818CBF7F86
2009-02-15S485122NF-PM1
B1=470000, B2=16097500, E=12