78 362 279 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 =	735000
B2 =	15618750

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-02-27	CNJST	4977DD9D8651800D	2090049	1	3
Verified	PRP without proof (not generated)	2019-06-20	XZT	CF01D39AA645C356	0	4	3
Verified	PRP without proof (not generated)	2019-06-24	endless_mike	4977DD9D8651800D	0	1	3
Verified	PRP without proof (not generated)	2019-06-28	endless_mike	CF01D39AA645C356	49837121	4	3
Verified	PRP without proof (not generated)	2019-07-02	daveward2005	4977DD9D8651800D	35195615	1	3

History

Date	User	Type	Result
2019-07-02	daveward2005	C-PRP	4977DD9D8651800D
2019-06-28	endless_mike	C-PRP	CF01D39AA645C356
2019-06-24	endless_mike	C-PRP	4977DD9D8651800D
2019-06-20	XZT	C-PRP	CF01D39AA645C356
2018-02-27	CNJST	C-PRP	4977DD9D8651800D
2016-01-19	AirSquirrels	NF	no factor TF: 74-75
2015-12-31	TheJudger	NF-PM1	B1=735000, B2=15618750, E=12
2015-01-06	NickOfTime	NF	no factor TF: 73-74
2015-01-06	NickOfTime	NF	no factor TF: 72-73
2014-10-01	NickOfTime	NF	no factor TF: 71-72
2013-01-16	Bold_Seeker	NF	no factor TF: 70-71
2011-03-17	Spielauer	NF	no factor TF: 69-70
2011-03-14	Paul H	NF	no factor TF: 68-69
2011-03-10	Paul H	NF	no factor TF: 67-68
2011-03-05	sunithaya	NF	no factor TF: 66-67
2011-03-01	GrunwalderGIMP	NF	no factor TF: 65-66
2010-10-28	Ethan O'Connor	NF	no factor TF: 64-65
2008-06-23	-anonymous-	NF	no factor TF: 1-64
2004-04-09	AxelFox	NF	no factor TF: 1-62