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
38966677Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 272
P-1
B1 = 450000
B2 = 8775000
LL
StatusDateUserResidueShift
Verified2007-11-17Kostas G. Gavrielidis2D100D1CFF68863823370402
Bad2015-10-21demfloroF85987218A71949A16987675
Verified2016-05-06AirSquirrels2D100D1CFF68863820674317
History
DateUserTypeResult
2020-02-02-Anonymous-NF
no factor from 2^73 to 2^74
2019-10-11-Anonymous-NF
no factor from 2^72 to 2^73
2019-05-26monstNF
no factor from 2^71 to 2^72
2016-05-06AirSquirrelsC-LL
2D100D1CFF688638
2015-10-21demfloroC-LL
F85987218A71949A
2014-12-09ChuckNF
no factor from 2^70 to 2^71
2014-10-28HBendtzNF
no factor from 2^69 to 2^70
2013-09-03Le ComteNF
no factor from 2^68 to 2^69