333 066 781 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

No factors below 2⁸¹

TF target 2⁸¹

P-1

B1 =	5310000
B2 =	5310000

Status	Date	User	Residue	Shift	Software
Unverified	2019-05-09	Max_32	428C120B02CF87__	115026131	Windows 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2023-02-03	Mark Rose	NF	no factor TF: 80-81
2023-02-03	Mark Rose	NF	no factor TF: 79-80
2023-02-03	Mark Rose	NF	no factor TF: 78-79
2023-02-03	Mark Rose	NF	no factor TF: 77-78
2019-05-09	Max_32	C-LL	428C120B02CF87__
2016-02-19	Max_32	NF	no factor TF: 76-77
2016-01-29	Max_32	NF-PM1	B1=5310000
2015-07-29	AirSquirrels	NF	no factor TF: 75-76
2015-07-29	Fredrik	NF	no factor TF: 74-75
2014-05-28	Preben S	NF	no factor TF: 73-74
2013-10-10	Preben S	NF	no factor TF: 72-73
2013-01-21	LaurV	NF	no factor TF: 71-72
2013-01-21	LaurV	NF	no factor TF: 70-71
2013-01-21	LaurV	NF	no factor TF: 69-70
2012-04-16	LaurV	NF	no factor TF: 66-69
2010-11-03	Architects Cubed	NF	no factor TF: 65-66