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
11603947Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 268
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 46415788
B2 = 140197877820
ECM
DigitsB1Curves
2550000280 / 280
3025000088 / 640
Estimated T-Level: 25.7 ⓘ
LL
StatusDateUserResidueShift
Verified2001-03-25Bennett McEwan7E6D7E0BD9C2F67E4436242
Verified2005-01-10Shane Sanford7E6D7E0BD9C2F67E8324565
History
DateUserTypeResult
2025-10-27yuriy_5-1NF-PP1
Start=2/7, B1=500000, B2=125000000
2025-02-24yuriy_5-1NF-PM1
B1=46415788, B2=140197877820
2025-01-13yuriy_5-1NF
no factor from 2^74 to 2^75
2024-09-02yuriy_5-1NF
no factor from 2^73 to 2^74
2024-08-06yuriy_5-1NF
no factor from 2^72 to 2^73
2024-05-13yuriy_5-1NF-PM1
B1=12648304, B2=111034753830
2023-01-08Naegi MakotoNF
no factor from 2^71 to 2^72
2021-08-14SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2021-05-01Architects CubedNF-PM1
B1=584000, B2=43779000
2018-01-03ramgeisNF
no factor from 2^68 to 2^69
2018-01-03ramgeisNF
no factor from 2^67 to 2^68
2016-01-15VictordeHollanderNF
no factor from 2^66 to 2^67
2015-04-29Sid & AndyNF-PM1
B1=125000, B2=2187500, E=6
2014-08-27NRNF
no factor from 2^65 to 2^66
2013-11-04lycornNF
no factor from 2^64 to 2^65