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
79758191Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 275
P-1
B1 = 665000
B2 = 12967500
LL
StatusDateUserResidueShift
Verified2017-05-15JSC49D481CB24ABA85F42575967
Verified2025-09-15Poao49D481CB24ABA85F73603551
History
DateUserTypeResult
2025-09-15PoaoC-LL
49D481CB24ABA85F
2017-05-15JSCC-LL
49D481CB24ABA85F
2016-04-20Sebastian HornbostelNF-PM1
B1=665000, B2=12967500
2016-04-12Bruno VictalNF
no factor from 2^74 to 2^75
2016-04-12Bruno VictalNF
no factor from 2^73 to 2^74
2016-04-12Bruno VictalNF
no factor from 2^72 to 2^73
2016-04-12Bruno VictalNF
no factor from 2^71 to 2^72
2013-07-14processinfoNF
no factor from 2^70 to 2^71
2013-04-01lexatrefNF
no factor from 2^69 to 2^70
2013-03-26SMoffatNF
no factor from 2^68 to 2^69
2011-04-15Carsten KossendeyNF
no factor from 2^67 to 2^68
2011-04-15Carsten KossendeyNF
no factor from 2^65 to 2^67
2010-11-30Architects CubedNF
no factor from 2^64 to 2^65
2009-05-28Architects CubedNF
no factor from 2^63 to 2^64