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
16386289Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1200000
B2 = 1173249000
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2002-10-19Michael Schiansky0A155652C4B7A2BF6095395
Verified2006-10-24Kevin DeLisle0A155652C4B7A2BF10562556
History
DateUserTypeResult
2024-04-13Jarod McClintockNF-PM1
B1=1200000, B2=1173249000
2023-05-28Sid & AndyNF
no factor from 2^72 to 2^73
2021-09-11-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-09SRBaseNF
no factor from 2^70 to 2^71
2021-04-28lycornNF
no factor from 2^69 to 2^70
2021-02-19James HeinrichNF-PM1
B1=367000, B2=22359000
2018-02-18ramgeisNF
no factor from 2^68 to 2^69
2018-02-18ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-08-18NesowaNF
no factor from 2^66 to 2^67