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
41982559Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 505000
B2 = 14645000
LL
StatusDateUserResidueShift
Verified2009-04-05Chris Vernieri5DE4BAE8EC76F72B921144
Verified2017-09-15Evgeniy Zavialov5DE4BAE8EC76F72B16908697
History
DateUserTypeResult
2020-01-24-Anonymous-NF
no factor from 2^73 to 2^74
2019-10-05-Anonymous-NF
no factor from 2^72 to 2^73
2017-09-15Evgeniy ZavialovC-LL
5DE4BAE8EC76F72B
2015-08-26AirSquirrelsNF
no factor from 2^71 to 2^72
2015-02-24Mark RoseNF
no factor from 2^70 to 2^71
2015-01-12el groccoNF
no factor from 2^69 to 2^70
2014-02-28bayanneNF
no factor from 2^68 to 2^69
2009-04-05Chris VernieriC-LL
5DE4BAE8EC76F72B
2009-03-07Chris VernieriNF-PM1
B1=505000, B2=14645000, E=6