74 422 001 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	620000
B2 =	12090000

Status	Date	User	Residue	Shift
Unverified	2016-05-06	NRGunne	5748C18544D2E5__	47568113

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-27	Luke Durant	6C1E29403E8B0BAA	0	1	3

History

Date	User	Type	Result
2024-11-27	James Heinrich	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-27	Luke Durant	C-PRP	6C1E29403E8B0BAA PRP proof power = 9 PRP: Verified Proof certified good
2016-05-06	NRGunne	C-LL	5748C18544D2E5__
2015-12-22	Brian Beuning	NF-PM1	B1=620000, B2=12090000, E=6
2015-12-15	AirSquirrels	NF	no factor from 2^74 to 2^75
2015-12-15	AirSquirrels	NF	no factor from 2^73 to 2^74
2015-09-02	Bdot	NF	no factor from 2^72 to 2^73
2015-08-16	Fredrik	NF	no factor from 2^71 to 2^72
2012-12-04	Simon Harrison	NF	no factor from 2^70 to 2^71
2011-08-22	tsc	NF	no factor to 2^70
2011-04-27	Carsten Kossendey	NF	no factor from 2^66 to 2^67
2011-04-10	-Anonymous-	NF	no factor from 2^65 to 2^66
2010-07-07	Bold_Seeker	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64