332 305 301 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 =	1564000
B2 =	354419940

Status	Date	User	Residue	Shift	Software
Unverified	2019-01-02	SalVi	CF630AAE0D3EED__	43915136	CUDALucas v2.05.1

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-04-15	Mark Rose	NF-PM1	B1=1564000, B2=354419940
2023-01-18	Mark Rose	NF	no factor TF: 80-81
2023-01-18	Mark Rose	NF	no factor TF: 79-80
2020-09-01	el grocco	NF	no factor TF: 78-79
2020-08-31	el grocco	NF	no factor TF: 77-78
2019-02-24	srow7	NF	no factor TF: 76-77
2019-01-02	SalVi	C-LL	CF630AAE0D3EED__
2015-08-18	Team_Inspector	NF	no factor TF: 75-76
2015-01-01	Team_Inspector	NF	no factor TF: 74-75
2013-07-25	Team_Inspector	NF	no factor TF: 73-74
2013-01-14	LaurV	NF	no factor TF: 72-73
2011-09-22	Grant McCracken	NF	no factor TF: 71-72
2011-05-07	Grant McCracken	NF	no factor TF: 70-71
2010-05-12	Sunfish	NF	no factor TF: 69-70
2009-07-31	Team_Inspector	NF	no factor TF: 68-69