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
11651557Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 268
P-1
B1 = 47706228
B2 = 140197877820
ECM
DigitsB1Curves
255000060 / 280
Estimated T-Level: 21.1
LL
StatusDateUserResidueShift
Verified2000-12-31Steve Spicer1790EBF0C68BAEEF941733
Verified2004-07-13Ing. Pavel PaJaSoft Janousek1790EBF0C68BAEEF8855498
History
DateUserTypeResult
2025-02-17yuriy_5-1NF-PM1
B1=47706228, B2=140197877820
2025-02-13yuriy_5-1NF
no factor from 2^74 to 2^75
2024-12-13yuriy_5-1NF
no factor from 2^73 to 2^74
2024-09-02yuriy_5-1NF
no factor from 2^72 to 2^73
2024-08-19yuriy_5-1NF-PM1
B1=14028476, B2=119800600920
2022-11-28Naegi MakotoNF
no factor from 2^71 to 2^72
2021-08-21LaurVNF-PM1
B1=6189107, B2=185673210
2021-08-16SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2018-01-14ramgeisNF
no factor from 2^68 to 2^69
2018-01-14ramgeisNF
no factor from 2^67 to 2^68
2016-01-30VictordeHollanderNF
no factor from 2^66 to 2^67
2014-12-20NesowaNF
no factor from 2^65 to 2^66
2013-11-03lycornNF
no factor from 2^64 to 2^65