332 218 409 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	2015-11-16	petrym	031EE2CBAE836B__	195370180	Linux 64-bit,Prime95,v28.5,build 2

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-02-14	Mark Rose	NF	no factor TF: 80-81
2023-02-14	Mark Rose	NF	no factor TF: 79-80
2015-11-16	petrym	C-LL	031EE2CBAE836B__
2013-07-13	Bill Staffen	NF	no factor TF: 78-79
2013-07-12	Bill Staffen	NF	no factor TF: 77-78
2013-07-12	Bill Staffen	NF	no factor TF: 76-77
2011-09-07	Danz	NF-PM1	B1=5305000
2010-07-30	Danz	NF	no factor TF: 75-76
2009-12-29	Harpo	NF	no factor TF: 74-75
2009-12-12	Harpo	NF	no factor TF: 73-74
2009-11-28	Harpo	NF	no factor TF: 72-73
2009-11-17	Team_Inspector	NF	no factor TF: 71-72
2009-10-13	Team_Inspector	NF	no factor TF: 70-71
2009-01-28	zetagrid	NF	no factor TF: 69-70
2009-01-17	Team_Inspector	NF	no factor TF: 68-69