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
15028967Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 1500000
B2 = 4590565980
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3 ⓘ
LL
StatusDateUserResidueShift
Verified2002-10-12Stephen HicksEB3C9647ABAEBE017256066
Verified2007-05-12S546929EB3C9647ABAEBE014446862
History
DateUserTypeResult
2022-03-26ATHNF-PP1
Start=2/7, B1=1000000, B2=28000000
2022-03-20LuminescenceNF-PM1
B1=1500000, B2=4590565980
2022-03-02Sid & AndyNF
no factor from 2^73 to 2^74
2022-01-22Architects CubedNF
no factor from 2^72 to 2^73
2021-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2020-06-19YxinityNF
no factor from 2^69 to 2^70
2017-10-01ramgeisNF
no factor from 2^68 to 2^69
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2015-12-01mikrNF
no factor from 2^67 to 2^68
2014-06-11NesowaNF
no factor from 2^66 to 2^67