332 288 491 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 =	2000000
B2 =	227590356

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2023-03-27	JacobZ	82FE741EEBAFB1F5	0	1	3

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-04-23	Naegi Makoto	CERT	Proof certified good
2023-03-27	JacobZ	C-PRP	Proof Certified Good Proof Power: 8
2023-03-01	JacobZ	NF-PM1	B1=2000000, B2=227590356
2023-01-06	Mark Rose	NF	no factor TF: 80-81
2023-01-06	Mark Rose	NF	no factor TF: 79-80
2020-08-25	el grocco	NF	no factor TF: 78-79
2020-07-31	Team_Inspector	NF	no factor TF: 77-78
2019-04-17	MadPoo 🙂	NF-PM1	B1=100000
2017-01-21	Grant McCracken	NF	no factor TF: 76-77
2014-12-12	Jacques MOLNE	NF	no factor TF: 75-76
2013-09-20	ktony	NF	no factor TF: 74-75
2013-05-15	kracker	NF	no factor TF: 73-74
2012-12-30	Team_Inspector	NF	no factor TF: 72-73
2012-01-20	Grant McCracken	NF	no factor TF: 71-72
2011-07-08	Grant McCracken	NF	no factor TF: 70-71
2010-06-11	Sunfish	NF	no factor TF: 69-70
2009-08-12	Team_Inspector	NF	no factor TF: 68-69