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
20824631Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 800000
B2 = 260668980
LL
StatusDateUserResidueShift
Verified2003-12-23Josef SpiessFC4018ECBA90AD2617453348
Bad2008-11-30-Anonymous-CD8B830CFDF62E1916301839
Verified2009-04-28Ernst HerzbergFC4018ECBA90AD2614919946
History
DateUserTypeResult
2022-01-13Sid & AndyNF-PM1
B1=800000, B2=260668980
2021-12-16-Anonymous-NF
no factor from 2^73 to 2^74
2021-11-07-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2018-05-25ramgeisNF
no factor from 2^69 to 2^70
2017-10-08VictordeHollanderNF
no factor from 2^68 to 2^69
2017-04-25ramgeisNF
no factor from 2^67 to 2^68
2015-03-29NRNF
no factor from 2^66 to 2^67
2009-04-28Ernst HerzbergC-LL
FC4018ECBA90AD26
2008-11-30metallurgeC-LL
CD8B830CFDF62E19