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
66010801Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 635000
B2 = 13493750
LL
StatusDateUserResidueShift
Verified2015-02-27curtisc269F2FE52B9A856E5395623
Verified2023-12-09tottenhoff269F2FE52B9A856E59263367
Verified2023-12-31Fabrice Bellet269F2FE52B9A856E51493607
History
DateUserTypeResult
2024-06-13LaurVNF
no factor from 2^71 to 2^72
2023-12-31Fabrice BelletC-LL
269F2FE52B9A856E
2023-12-09tottenhoffC-LL
269F2FE52B9A856E
2020-04-05Nagasan64NF
no factor from 2^74 to 2^75
2015-02-27curtiscC-LL
269F2FE52B9A856E
2014-05-10brilongNF
no factor from 2^73 to 2^74
2014-03-09TheJudgerNF-PM1
B1=635000, B2=13493750, E=12
2014-02-23TheJudgerNF
no factor from 2^72 to 2^73
2013-10-10Architects CubedNF
no factor from 2^71 to 2^72
2013-04-21SMoffatNF
no factor from 2^70 to 2^71
2012-02-09Matt EsserNF
no factor from 2^69 to 2^70
2010-05-26alexey77NF
no factor from 2^68 to 2^69
2010-05-25TSRPrimeNF
no factor from 2^67 to 2^68
2010-05-23Geoff WingNF
no factor from 2^66 to 2^67
2010-05-21Geoff WingNF
no factor from 2^65 to 2^66
2010-05-19Geoff WingNF
no factor from 2^64 to 2^65
2009-02-231997rj7NF
no factor to 2^64