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
11631817Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 268
P-1
B1 = 12678682
B2 = 111034753830
ECM
DigitsB1Curves
255000084 / 280
Estimated T-Level: 21.5 ⓘ
LL
StatusDateUserResidueShift
Verified2001-12-08Willamette Mathematics4DD650E8CEC56EE29588750
Verified2004-03-26Marc Getty / Phil Fizur4DD650E8CEC56EE23424261
History
DateUserTypeResult
2025-03-07yuriy_5-1NF
no factor from 2^74 to 2^75
2024-12-02yuriy_5-1NF
no factor from 2^73 to 2^74
2024-08-08yuriy_5-1NF
no factor from 2^72 to 2^73
2024-05-13yuriy_5-1NF-PM1
B1=12678682, B2=111034753830
2023-01-13riccardo ubertiNF-PP1
Start=6/5, B1=2300000, B2=48000000
2023-01-04riccardo ubertiNF-PP1
Start=2/7, B1=2000000, B2=40000000
2022-12-20riccardo ubertiNF-PM1
B1=1500000, B2=102234990
2022-12-13riccardo ubertiNF
no factor from 2^71 to 2^72
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-07SRBaseNF
no factor from 2^69 to 2^70
2019-11-25riccardo ubertiNF-PM1
B1=430000, B2=8500000, E=12
2018-01-02ramgeisNF
no factor from 2^68 to 2^69
2018-01-02ramgeisNF
no factor from 2^67 to 2^68
2016-01-30VictordeHollanderNF
no factor from 2^66 to 2^67
2014-12-20NesowaNF
no factor from 2^65 to 2^66
2013-11-03lycornNF
no factor from 2^64 to 2^65