332 511 173 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 =	1565000
B2 =	354405150

Status	Date	User	Residue	Shift	Software
Unverified	2019-08-31	T.Tatekawa	3924FE49D8D8EC__	128331994	CUDALucas v2.05

History

Date	User	Type	Result
2023-05-22	Mark Rose	NF-PM1	B1=1565000, B2=354405150
2023-02-11	Mark Rose	NF	no factor TF: 80-81
2023-02-11	Mark Rose	NF	no factor TF: 79-80
2023-02-11	Mark Rose	NF	no factor TF: 78-79
2022-05-10	Jon Pace	NF	no factor TF: 77-78
2020-11-23	bayanne	NF	no factor TF: 76-77
2019-08-31	T.Tatekawa	C-LL	3924FE49D8D8EC__
2019-08-08	mnd9	NF	no factor TF: 75-76
2015-12-25	LaurV	NF	no factor TF: 74-75
2015-05-25	srow7	NF	no factor TF: 73-74
2013-06-29	kracker	NF	no factor TF: 72-73
2013-03-03	Chuck	NF	no factor TF: 71-72
2013-01-16	kracker	NF	no factor TF: 70-71
2012-07-02	LaurV	NF	no factor TF: 69-70
2012-04-11	LaurV	NF	no factor TF: 68-69
2011-10-18	Grant McCracken	NF	no factor TF: 67-68