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
15438149Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1500000
B2 = 787382310
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2002-05-25Louis TowlesC6402763D835773E2131375
Bad2006-01-01Angelo Maniquis823B18F7684BD88812096726
Verified2006-07-10Brian PeltzerC6402763D835773E3596832
History
DateUserTypeResult
2024-07-20Sid & AndyNF-PM1
B1=1500000, B2=787382310
2023-06-18Sid & AndyNF
no factor from 2^72 to 2^73
2021-09-19-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-07SRBaseNF
no factor from 2^70 to 2^71
2021-06-13lycornNF
no factor from 2^69 to 2^70
2018-02-10ramgeisNF
no factor from 2^68 to 2^69
2018-02-10ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-02-23NesowaNF
no factor from 2^66 to 2^67