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
9365821Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 268
P-1
B1 = 2000000
B2 = 4771857090
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
LL
StatusDateUserResidueShift
Verified2000-02-23Marc HoneyE5A9370AC6A371C16848
Verified2003-05-19Brian JueE5A9370AC6A371C13391881
History
DateUserTypeResult
2023-04-03Naegi MakotoNF
no factor from 2^71 to 2^72
2022-12-24ThaNF-PM1
B1=2000000, B2=4771857090
2020-12-13-Anonymous-NF
no factor from 2^70 to 2^71
2020-12-13-Anonymous-NF
no factor from 2^69 to 2^70
2019-09-09mnd9NF
no factor from 2^68 to 2^69
2017-04-26snme2pm1NF
no factor from 2^67 to 2^68
2016-05-17snme2pm1NF
no factor from 2^66 to 2^67
2015-05-08VictordeHollanderNF
no factor from 2^65 to 2^66
2013-09-05NesowaNF
no factor from 2^64 to 2^65
2012-08-31James HeinrichNF-PM1
B1=175000, B2=3850000, E=6