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
15249701Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 1000000
B2 = 727762860
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2002-05-11Chris HalsallC9A4CE7C3EB67C4C14288105
Verified2005-11-13S369779C9A4CE7C3EB67C4C9514304
History
DateUserTypeResult
2022-03-27megavinkNF-PM1
B1=1000000, B2=727762860
2022-02-27TheJudgerNF
no factor from 2^73 to 2^74
2022-02-26RichD0NF
no factor from 2^72 to 2^73
2021-10-15-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-06SRBaseNF
no factor from 2^70 to 2^71
2021-06-22lycornNF
no factor from 2^69 to 2^70
2017-12-27ramgeisNF
no factor from 2^68 to 2^69
2017-12-27ramgeisNF
no factor from 2^67 to 2^68
2014-05-28NesowaNF
no factor from 2^66 to 2^67
2013-09-16David CampeauNF
no factor from 2^65 to 2^66