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
5515651Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 8000000
B2 = 6410980290
ECM
DigitsB1Curves
2550000106 / 280
Estimated T-Level: 21.9 ⓘ
LL
StatusDateUserResidueShift
Verified1999-04-23John Wyszynski7B9D98B45A4B340B333734
Verified2000-12-21craig harmer7B9D98B45A4B340B4179037
History
DateUserTypeResult
2022-09-10Sid & AndyNF-PM1
B1=8000000, B2=6410980290
2021-09-21SRBaseNF
no factor from 2^71 to 2^72
2021-08-30SRBaseNF
no factor from 2^70 to 2^71
2021-08-18SRBaseNF
no factor from 2^69 to 2^70
2020-08-24TJAOINF
no factor from 2^68 to 2^69
2020-06-13KingNF-PM1
B1=1000000, B2=22500000, E=12
2018-07-05ramgeisNF
no factor from 2^67 to 2^68
2016-07-17Gordon SpenceNF
no factor from 2^66 to 2^67
2015-08-30snme2pm1NF
no factor from 2^65 to 2^66
2014-12-05monstNF
no factor from 2^64 to 2^65
2014-12-04NesowaNF
no factor from 2^63 to 2^64
2009-04-28GrunwalderGIMPNF
no factor from 2^62 to 2^63
2008-11-03Jayson KingNF-PM1
B1=70000, B2=1400000, E=6