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
11800889Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 1822500
B2 = 1180536630
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2001-03-25Ian A. Lumsden632E9B566D71E40B7476759
Verified2004-07-02Peter Miller632E9B566D71E40B10205834
History
DateUserTypeResult
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2024-04-25kurlyNF-PM1
B1=1822500, B2=1180536630
2019-05-03riccardo ubertiNF-PM1
B1=430000, B2=8500000, E=12
2018-02-05Oliver KruseNF
no factor from 2^67 to 2^72
2018-01-21ramgeisNF
no factor from 2^68 to 2^69
2018-01-21ramgeisNF
no factor from 2^67 to 2^68
2016-02-15VictordeHollanderNF
no factor from 2^66 to 2^67
2013-11-02NesowaNF
no factor from 2^65 to 2^66
2013-10-24lycornNF
no factor from 2^64 to 2^65