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
16559447Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 2000000
B2 = 5438460300
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2002-09-29Team RomaniaFED2942D05AAC70510632818
Verified2007-01-16Ars Technica Team Prime RibFED2942D05AAC7059103173
History
DateUserTypeResult
2024-08-11linamentNF-PM1
B1=2000000, B2=5438460300
2024-08-10linamentNF-PM1
B1=2000000
2022-03-15RichD0NF-PM1
B1=824000, B2=186800460
2022-02-18Dylan DelgadoNF
no factor from 2^72 to 2^73
2021-09-17-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-09SRBaseNF
no factor from 2^70 to 2^71
2021-04-04lycornNF
no factor from 2^69 to 2^70
2018-03-01ramgeisNF
no factor from 2^68 to 2^69
2018-03-01ramgeisNF
no factor from 2^67 to 2^68
2014-09-07NesowaNF
no factor from 2^66 to 2^67
2013-09-29David CampeauNF
no factor from 2^65 to 2^66