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
15073351Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 3333333
B2 = 8295023100
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3 ⓘ
LL
StatusDateUserResidueShift
Verified2002-03-24Ari Örn1CBAE61F2FFE8ED614782927
Verified2005-11-27Marc Getty / Phil Fizur1CBAE61F2FFE8ED68716250
History
DateUserTypeResult
2024-09-11Sid & AndyNF-PM1
B1=1800000, B2=625060800
2024-09-10timc995NF-PM1
B1=3333333, B2=8295023100
2022-07-06ATHNF-PP1
Start=2/7, B1=1000000, B2=28000000
2022-03-05Yves de WandelaarNF
no factor from 2^73 to 2^74
2022-01-21Markus K.NF
no factor from 2^72 to 2^73
2021-10-10-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-03SRBaseNF
no factor from 2^70 to 2^71
2021-07-06lycornNF
no factor from 2^69 to 2^70
2017-10-06ramgeisNF
no factor from 2^68 to 2^69
2016-04-08mikrNF
no factor from 2^67 to 2^68
2014-06-11NesowaNF
no factor from 2^66 to 2^67
2014-06-11NesowaNF
no factor from 2^65 to 2^66