332 308 831 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with PRP test

No factors below 2⁸¹

TF target 2⁸¹

P-1

B1 =	3165000
B2 =	104445000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=7	2025-11-07	Simon Josefsson	7F2DD9E2BC936DD5	282557686	1	3

History

Date	User	Type	Result
2025-11-10	Kriesel	CERT	Proof certified good
2025-11-07	Simon Josefsson	C-PRP	7F2DD9E2BC936DD5 Proof Certified Good Proof Power: 7
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-01-19	Mark Rose	NF	no factor TF: 80-81
2023-01-19	Mark Rose	NF	no factor TF: 79-80
2020-09-15	Runtime Error	NF	no factor TF: 78-79
2020-09-13	LOBES	NF	no factor TF: 77-78
2016-01-06	aurashift	NF	no factor TF: 76-77
2015-12-31	aurashift	NF-PM1	B1=3165000, B2=104445000, E=12
2015-10-23	Team_Inspector	NF	no factor TF: 75-76
2015-01-16	Team_Inspector	NF	no factor TF: 74-75
2013-03-25	ktony	NF	no factor TF: 73-74
2013-01-15	LaurV	NF	no factor TF: 72-73
2012-05-07	Grant McCracken	NF	no factor TF: 71-72
2011-06-29	Grant McCracken	NF	no factor TF: 70-71
2010-05-24	Sunfish	NF	no factor TF: 69-70
2009-08-09	Team_Inspector	NF	no factor TF: 68-69