74 207 423 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁶

TF target 2⁷⁴

P-1

B1 =	645000
B2 =	12900000

Status	Date	User	Residue	Shift	Software
Bad	2016-03-11	ANONYMOUS	36AA805D72B099F9	12592352	Windows 64-bit,Prime95,v28.5,build 2
Verified	2016-04-12	Kyle Z Schmidt	F908E45CCEED5793	56912128	Windows 64-bit,Prime95,v28.5,build 2
Verified	2016-08-05	AirSquirrels	F908E45CCEED5793	33545082	CUDALucas v2.05.1

History

Date	User	Type	Result
2021-12-15	LordJulius	NF	no factor TF: 75-76
2016-08-05	AirSquirrels	C-LL	F908E45CCEED5793
2016-04-12	Kyle Z Schmidt	C-LL	F908E45CCEED5793
2016-03-11	ANONYMOUS	C-LL	36AA805D72B099F9
2015-06-14	TheJudger	NF-PM1	B1=645000, B2=12900000, E=12
2015-06-08	kdgehman	NF	no factor TF: 74-75
2015-06-08	kdgehman	NF	no factor TF: 73-74
2015-06-08	kdgehman	NF	no factor TF: 72-73
2015-06-08	kdgehman	NF	no factor TF: 71-72
2013-05-10	SMoffat	NF	no factor TF: 70-71
2012-10-23	Clown_Royal	NF	no factor TF: 69-70
2011-01-27	RunSkipJak73	NF	no factor TF: 68-69
2011-01-24	searchingforprimes	NF	no factor TF: 67-68
2011-01-05	searchingforprimes	NF	no factor TF: 66-67
2011-01-02	searchingforprimes	NF	no factor TF: 65-66
2010-11-02	Alex Wacker	NF	no factor TF: 64-65
2008-09-12	lycorn	NF	no factor TF: 1-64