44 394 173 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 2⁷⁴

TF target 2⁷²

P-1

B1 =	535000
B2 =	15381250

Status	Date	User	Residue	Shift	Software
Bad	2009-05-08	eskifullofbeer	98463F28B48A08C0	10370799	Windows,Prime95,v25.7,build 3
Verified	2015-08-31	MadPoo 🙂	FDBFED9B23F2F50D	1928173	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2016-09-01	ATH	FDBFED9B23F2F50D	22212024	CUDALucas v2.05.1

History

Date	User	Type	Result
2024-05-25	Chuck	NF	no factor TF: 68-69
2022-04-10	TheJudger	NF	no factor TF: 73-74
2022-04-10	TheJudger	NF	no factor TF: 72-73
2016-09-01	ATH	C-LL	FDBFED9B23F2F50D
2015-08-31	MadPoo 🙂	C-LL	FDBFED9B23F2F50D
2015-08-18	Sid & Andy	NF	no factor TF: 71-72
2015-08-18	Sid & Andy	NF	no factor TF: 70-71
2015-07-03	el grocco	NF	no factor TF: 69-70
2013-01-29	Carsten Kossendey	NF	no factor TF: 68-69
2009-05-08	eskifullofbeer	C-LL	98463F28B48A08C0
2009-04-08	eskifullofbeer	NF-PM1	B1=535000, B2=15381250
2008-03-03	MadPoo 🙂	NF	no factor TF: 1-68
2007-10-17	MadPoo 🙂	NF	no factor TF: 1-68
2005-03-20	dave_0273	NF	no factor TF: 1-62