74 485 337 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 =	740000
B2 =	16650000

Status	Date	User	Residue	Shift
Unverified	2017-01-04	eskifullofbeer	50BB0435AC5049__	7108

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-27	Luke Durant	4367D727D541D394	0	1	3

History

Date	User	Type	Result
2024-11-27	Jon Pace	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-27	Luke Durant	C-PRP	4367D727D541D394 PRP proof power = 9 PRP: Verified Proof certified good
2017-01-04	eskifullofbeer	C-LL	50BB0435AC5049__
2016-07-08	-Anonymous-	NF	no factor from 2^74 to 2^75
2015-01-09	Jerry Hallett	NF	no factor from 2^73 to 2^74
2014-10-12	TheJudger	NF-PM1	B1=740000, B2=16650000, E=12
2012-12-22	phoenicis	NF	no factor from 2^72 to 2^73
2012-12-22	phoenicis	NF	no factor from 2^71 to 2^72
2012-12-22	phoenicis	NF	no factor from 2^70 to 2^71
2012-10-16	AllRandom	NF	no factor from 2^69 to 2^70
2010-07-25	DigiK-oz	NF	no factor from 2^68 to 2^69
2010-07-24	BranMuffin	NF	no factor from 2^67 to 2^68
2010-07-18	kurly	NF	no factor from 2^66 to 2^67
2010-07-12	DRH	NF	no factor from 2^65 to 2^66
2010-07-10	drewha - Belarus	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64