Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
18835637Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1000000
B2 = 181212780
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2003-05-19Pace Nielsen9D5F65340C66099F7549269
Verified2007-08-14Ars Technica Team Prime Rib9D5F65340C66099F6368073
History
DateUserTypeResult
2022-04-03masserNF-PM1
B1=1000000, B2=181212780
2021-11-05-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-08-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-13SRBaseNF
no factor from 2^70 to 2^71
2020-01-25lycornNF
no factor from 2^69 to 2^70
2017-09-22ramgeisNF
no factor from 2^68 to 2^69
2017-09-22ramgeisNF
no factor from 2^67 to 2^68
2014-08-02NesowaNF
no factor from 2^66 to 2^67