74 413 373 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	2016-03-12	Ryan Propper	396E8E1C489B70__	46381444

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-27	Luke Durant	1F67BD1150A0EAC6	0	1	3

History

Date	User	Type	Result
2024-11-27	Xyzzy	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-27	Luke Durant	C-PRP	1F67BD1150A0EAC6 PRP proof power = 9 PRP: Verified Proof certified good
2016-03-12	Ryan Propper	C-LL	396E8E1C489B70__
2015-11-01	TheJudger	NF-PM1	B1=645000, B2=12900000, E=12
2015-10-27	AirSquirrels	NF	no factor from 2^74 to 2^75
2015-10-27	AirSquirrels	NF	no factor from 2^73 to 2^74
2015-08-31	Bdot	NF	no factor from 2^72 to 2^73
2015-08-31	Bdot	NF	no factor from 2^71 to 2^72
2013-05-11	timc995	NF	no factor from 2^70 to 2^71
2012-10-24	SMoffat	NF	no factor from 2^69 to 2^70
2010-08-20	Cow_tipping	NF	no factor from 2^68 to 2^69
2010-08-15	tmorrow	NF	no factor from 2^67 to 2^68
2010-08-13	DigiK-oz	NF	no factor from 2^66 to 2^67
2010-08-12	Yxinity	NF	no factor from 2^65 to 2^66
2010-08-09	Hinesp	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64