Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
26670097Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 270
P-1
B1 = 1923076
B2 = 1857401910
LL
StatusDateUserResidueShift
Bad2007-02-05Olle JohanssonC0D713D64FBDED5015709085
Verified2009-02-19George WoltmanE1C589F97BA61C3112069312
Verified2011-11-10InhumiererE1C589F97BA61C312311877
History
DateUserTypeResult
2025-01-12timc995NF-PM1
B1=1923076, B2=1857401910
2021-10-17TheJudgerNF
no factor from 2^74 to 2^75
2021-09-19TheJudgerNF
no factor from 2^73 to 2^74
2021-08-24TheJudgerNF
no factor from 2^72 to 2^73
2021-08-24TheJudgerNF
no factor from 2^71 to 2^72
2021-05-12mikrNF
no factor from 2^70 to 2^71
2018-08-13-Anonymous-NF
no factor from 2^69 to 2^70
2018-03-26VictordeHollanderNF
no factor from 2^68 to 2^69
2011-11-10InhumiererC-LL
E1C589F97BA61C31
2011-10-27ChuckNF
no factor from 2^67 to 2^68
2009-02-19George WoltmanC-LL
E1C589F97BA61C31