78 374 381 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 2⁷⁵

TF target 2⁷⁵

P-1

B1 =	655000
B2 =	13100000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-03-01	Milwizzle	0C9B3EBA91BE428E	41339990	1	3
Verified	PRP without proof (not generated)	2019-06-19	XZT	B12F416B9928BFED	0	4	3
Verified	PRP without proof (not generated)	2019-06-22	XZT	0C9B3EBA91BE428E	71125173	1	3
Verified	PRP without proof (not generated)	2019-06-28	endless_mike	B12F416B9928BFED	63988269	4	3
Verified	PRP without proof (not generated)	2019-06-28	endless_mike	0C9B3EBA91BE428E	0	1	3

History

Date	User	Type	Result
2019-06-28	endless_mike	C-PRP	0C9B3EBA91BE428E
2019-06-28	endless_mike	C-PRP	B12F416B9928BFED
2019-06-22	XZT	C-PRP	0C9B3EBA91BE428E
2019-06-19	XZT	C-PRP	B12F416B9928BFED
2018-03-01	Milwizzle	C-PRP	0C9B3EBA91BE428E
2016-06-05	TheJudger	NF-PM1	B1=655000, B2=13100000, E=12
2016-05-27	Bdot	NF	no factor TF: 74-75
2016-05-26	Bdot	NF	no factor TF: 73-74
2016-05-22	cuBerBruce	NF	no factor TF: 72-73
2013-05-25	Brian V.	NF	no factor TF: 71-72
2013-05-25	Brian V.	NF	no factor TF: 70-71
2013-02-11	Clown_Royal	NF	no factor TF: 69-70
2012-04-12	-anonymous-	NF	no factor TF: 68-69
2012-04-05	-anonymous-	NF	no factor TF: 67-68
2011-04-28	Carsten Kossendey	NF	no factor TF: 66-67
2011-04-08	-anonymous-	NF	no factor TF: 65-66
2011-01-02	arnaud	NF	no factor TF: 64-65
2008-07-01	-anonymous-	NF	no factor TF: 1-64
2004-04-09	AxelFox	NF	no factor TF: 1-62