74 423 597 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 2⁷⁶

TF target 2⁷⁴

P-1

B1 =	615000
B2 =	9686250

Status	Date	User	Residue	Shift
Unverified	2016-04-07	Daniel Cimatti	66EB76C8EB0E70__	64033448

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-27	Luke Durant	B1ED4083B5AF24B9	0	1	3

History

Date	User	Type	Result
2024-11-27	ky0uraku	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-27	Luke Durant	C-PRP	B1ED4083B5AF24B9 PRP proof power = 9 PRP: Verified Proof certified good
2024-09-28	masser	NF	no factor from 2^75 to 2^76
2016-04-07	Daniel Cimatti	C-LL	66EB76C8EB0E70__
2015-11-01	TheJudger	NF-PM1	B1=615000, B2=9686250
2015-10-24	AirSquirrels	NF	no factor from 2^74 to 2^75
2015-10-24	AirSquirrels	NF	no factor from 2^73 to 2^74
2015-09-02	Bdot	NF	no factor from 2^72 to 2^73
2015-08-18	Judge Hale	NF	no factor from 2^71 to 2^72
2013-05-28	-Anonymous-	NF	no factor from 2^70 to 2^71
2012-10-24	SMoffat	NF	no factor from 2^69 to 2^70
2010-10-15	eon_blue_apocalypse	NF	no factor from 2^68 to 2^69
2010-10-12	-Anonymous-	NF	no factor from 2^67 to 2^68
2010-10-04	drewha - Belarus	NF	no factor from 2^66 to 2^67
2010-09-26	andrea.biancalana	NF	no factor from 2^65 to 2^66
2010-07-07	CMTalon	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64