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
51253183Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 273
P-1
B1 = 615000
B2 = 19680000
LL
StatusDateUserResidueShift
Verified2011-09-13outofoptions6E346971FE0F96A939448277
Verified2016-08-27kkmrkkblmbrbk6E346971FE0F96A920409978
History
DateUserTypeResult
2024-08-16tbusbyNF
no factor from 2^70 to 2^71
2016-08-27kkmrkkblmbrbkC-LL
6E346971FE0F96A9
2016-02-23Mark RoseNF
no factor from 2^60 to 2^63
2015-08-04Mark RoseNF
no factor from 2^72 to 2^73
2015-07-26Mark RoseNF
no factor from 2^71 to 2^72
2015-07-24Architects CubedNF
no factor from 2^70 to 2^71
2015-01-01monstNF
no factor from 2^69 to 2^70
2011-09-13outofoptionsC-LL
6E346971FE0F96A9
2009-12-19Sturle SundeNF
no factor from 2^68 to 2^69
2009-10-16Sturle SundeNF-PM1
B1=615000, B2=19680000, E=6
2009-04-17SpielauerNF
no factor from 2^67 to 2^68
2008-12-01CyberChris70NF
no factor from 2^66 to 2^67
2008-11-30CyberChris70NF
no factor from 2^65 to 2^66
2008-11-29FredrikNF
no factor from 2^64 to 2^65
2008-11-26buzzby22NF
no factor from 2^63 to 2^64