74 350 879 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 =	645000
B2 =	12900000

Status	Date	User	Residue	Shift
Unverified	2015-08-08	aurashift	D44F381A26FCDF__	25959478

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-26	Luke Durant	2891D978AB7C13B3	0	1	3

History

Date	User	Type	Result
2024-11-26	freiburger	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-26	Luke Durant	C-PRP	2891D978AB7C13B3 PRP proof power = 9 PRP: Verified Proof certified good
2015-08-08	aurashift	C-LL	D44F381A26FCDF__
2015-07-19	TheJudger	NF-PM1	B1=645000, B2=12900000, E=12
2015-07-12	fre_games	NF	no factor from 2^74 to 2^75
2015-07-12	fre_games	NF	no factor from 2^73 to 2^74
2015-07-12	fre_games	NF	no factor from 2^72 to 2^73
2015-07-12	fre_games	NF	no factor from 2^71 to 2^72
2013-05-08	PascalBieri	NF	no factor from 2^70 to 2^71
2012-11-22	-Anonymous-	NF	no factor from 2^69 to 2^70
2011-01-20	runesk	NF	no factor from 2^68 to 2^69
2010-11-17	ticky_chalk	NF	no factor from 2^67 to 2^68
2010-11-10	Tony Davies	NF	no factor from 2^66 to 2^67
2010-11-06	ptcr	NF	no factor from 2^65 to 2^66
2010-11-06	Fred Cirera	NF	no factor from 2^64 to 2^65
2008-09-16	lycorn	NF	no factor to 2^64