332 316 241 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 =	5305000
B2 =	5305000

Status	Date	User	Residue	Shift	Software
Unverified	2019-07-07	IIRyskII	1A8181E402D13A__	145924429	Windows 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-02-26	Mark Rose	NF	no factor TF: 80-81
2023-02-26	Mark Rose	NF	no factor TF: 79-80
2023-01-31	Mark Rose	NF	no factor TF: 78-79
2021-08-09	Random GPUs	NF	no factor TF: 77-78
2019-07-07	IIRyskII	C-LL	1A8181E402D13A__
2018-10-26	IIRyskII	NF	no factor TF: 76-77
2018-10-15	IIRyskII	NF-PM1	B1=5305000
2016-01-11	Team_Inspector	NF	no factor TF: 75-76
2014-04-18	Preben S	NF	no factor TF: 74-75
2013-09-11	Team_Inspector	NF	no factor TF: 73-74
2013-01-16	LaurV	NF	no factor TF: 72-73
2012-05-09	Grant McCracken	NF	no factor TF: 71-72
2011-05-25	Grant McCracken	NF	no factor TF: 70-71
2010-06-20	Sunfish	NF	no factor TF: 69-70
2009-08-24	Team_Inspector	NF	no factor TF: 68-69