74 404 219 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 =	640000
B2 =	12480000

Status	Date	User	Residue	Shift
Unverified	2016-04-30	aurashift	783ED652B65F7E__	61182317

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-27	Luke Durant	601CEFCF795D0735	0	1	3

History

Date	User	Type	Result
2024-11-27	CHRIS.Z	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-27	Luke Durant	C-PRP	601CEFCF795D0735 PRP proof power = 9 PRP: Verified Proof certified good
2016-04-30	aurashift	C-LL	783ED652B65F7E__
2015-08-30	TheJudger	NF-PM1	B1=640000, B2=12480000
2015-08-23	fre_games	NF	no factor from 2^74 to 2^75
2015-08-23	fre_games	NF	no factor from 2^73 to 2^74
2015-08-23	fre_games	NF	no factor from 2^72 to 2^73
2015-08-17	fre_games	NF	no factor from 2^71 to 2^72
2013-08-03	-Anonymous-	NF	no factor from 2^70 to 2^71
2012-12-06	-Anonymous-	NF	no factor from 2^69 to 2^70
2010-08-21	GrunwalderGIMP	NF	no factor from 2^68 to 2^69
2010-08-20	GrunwalderGIMP	NF	no factor from 2^67 to 2^68
2010-08-19	ixfd64	NF	no factor from 2^66 to 2^67
2010-07-12	-Anonymous-	NF	no factor from 2^65 to 2^66
2010-07-11	Wolfgang Steger	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64