332 411 881 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 =	2670000
B2 =	60742500

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2021-11-07	Chelle	681C825CA50E48C3	193304775	1	3

History

Date	User	Type	Result
2023-03-09	Mark Rose	NF	no factor TF: 80-81
2021-11-16	ZacHFX	CERT	Proof certified good
2021-11-07	Chelle	C-PRP	Proof Certified Good Proof Power: 8
2019-03-25	requiem	NF-PM1	B1=2670000, B2=60742500
2018-01-03	Random GPUs	NF	no factor TF: 79-80
2018-01-03	Random GPUs	NF	no factor TF: 78-79
2018-01-03	Random GPUs	NF	no factor TF: 77-78
2018-01-03	Random GPUs	NF	no factor TF: 76-77
2018-01-03	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
2013-04-03	kracker	NF	no factor TF: 72-73
2013-02-27	kracker	NF	no factor TF: 71-72
2012-10-09	kracker	NF	no factor TF: 70-71
2012-06-30	LaurV	NF	no factor TF: 69-70
2011-04-17	Grant McCracken	NF	no factor TF: 68-69
2011-04-17	Grant McCracken	NF	no factor TF: 67-68