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
12069229Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 2000000
B2 = 3802718010
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2001-09-16Thomas Honold99A28240A9F74B125835669
Bad2004-12-13Chris Cudahy8E722E6A197EACD28762569
Verified2005-03-06Shane Sanford99A28240A9F74B122941171
History
DateUserTypeResult
2024-11-16TheJudgerNF
no factor from 2^72 to 2^73
2024-01-13ThaNF-PM1
B1=2000000, B2=3802718010
2021-10-22-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-16SRBaseNF
no factor from 2^70 to 2^71
2021-08-07SRBaseNF
no factor from 2^69 to 2^70
2017-11-03ramgeisNF
no factor from 2^68 to 2^69
2015-05-27ThaNF
no factor from 2^67 to 2^68
2015-02-09ThaNF
no factor from 2^66 to 2^67
2013-10-04NesowaNF
no factor from 2^65 to 2^66
2013-09-23lycornNF
no factor from 2^64 to 2^65
2011-02-12Roman MaznichenkoNF-PM1
B1=200000, B2=4000000, E=6