332 217 971 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 =	2381000
B2 =	83480000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2021-10-06	Noodles	7C55C7E768ED0CF2	228463739	1	3

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-03-29	Mark Rose	NF	no factor TF: 80-81
2023-03-29	Mark Rose	NF	no factor TF: 79-80
2021-10-07	curtisc	CERT	Proof certified good
2021-10-06	Noodles	C-PRP	7C55C7E768ED0CF2 Proof Certified Good Proof Power: 8
2021-07-27	Noodles	NF-PM1	B1=2381000, B2=83480000
2020-08-04	el grocco	NF	no factor TF: 78-79
2019-12-06	MadPoo 🙂	NF-PM1	B1=100000, B2=1000000
2019-04-05	MadPoo 🙂	NF-PM1	B1=100000
2015-06-25	NR	NF	no factor TF: 77-78
2015-06-25	NR	NF	no factor TF: 76-77
2011-06-15	Chuck	NF	no factor TF: 75-76
2011-06-14	Sunfish	NF	no factor TF: 74-75
2010-12-02	Team_Inspector	NF	no factor TF: 73-74
2009-03-06	Zhangcheng	NF	no factor TF: 72-73
2008-12-23	werdwerdus	NF	no factor TF: 71-72
2008-12-22	werdwerdus	NF	no factor TF: 70-71
2008-12-22	werdwerdus	NF	no factor TF: 69-70
2008-12-22	werdwerdus	NF	no factor TF: 68-69