332 411 921 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 =	1565000
B2 =	354849180

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2020-09-05	Albrecht Heeffer	8C24DAA28A79C58C	0	1	3

History

Date	User	Type	Result
2023-02-08	Mark Rose	NF-PM1	B1=1565000, B2=354849180
2023-02-01	Mark Rose	NF	no factor TF: 80-81
2020-09-05	Ben Delo	CERT	Proof certified good
2020-09-05	Albrecht Heeffer	C-PRP	8C24DAA28A79C58C Proof Certified Good Proof Power: 8
2018-01-30	Random GPUs	NF	no factor TF: 79-80
2018-01-30	Random GPUs	NF	no factor TF: 78-79
2018-01-30	Random GPUs	NF	no factor TF: 77-78
2018-01-30	Random GPUs	NF	no factor TF: 76-77
2018-01-30	Random GPUs	NF	no factor TF: 75-76
2016-04-10	-anonymous-	NF	no factor TF: 74-75
2015-02-02	Xebecer	NF	no factor TF: 73-74
2013-04-07	kracker	NF	no factor TF: 72-73
2013-02-28	kracker	NF	no factor TF: 71-72
2012-10-10	kracker	NF	no factor TF: 70-71
2012-06-30	LaurV	NF	no factor TF: 69-70
2011-04-18	Grant McCracken	NF	no factor TF: 68-69
2011-04-17	Grant McCracken	NF	no factor TF: 67-68