44 352 641 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 =	750000
B2 =	750000

Status	Date	User	Residue	Shift	Software
Bad	2011-03-13	oodaira	1894DC11A64E69C0	38832201	Windows,Prime95,v25.11,build 2
Verified	2015-11-07	MadPoo 🙂	4AC5CB889CA3E762	41882046	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2016-09-23	Mark Rose	4AC5CB889CA3E762	19583728	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-08-16	tbusby	NF	no factor TF: 70-71
2022-04-10	TheJudger	NF	no factor TF: 73-74
2022-04-10	TheJudger	NF	no factor TF: 72-73
2016-09-23	Mark Rose	C-LL	4AC5CB889CA3E762
2015-11-07	MadPoo 🙂	C-LL	4AC5CB889CA3E762
2015-08-10	Sid & Andy	NF	no factor TF: 71-72
2015-07-23	Architects Cubed	NF	no factor TF: 70-71
2015-07-04	David Campeau	NF	no factor TF: 69-70
2014-03-09	Torben K.	NF	no factor TF: 68-69
2011-03-13	oodaira	C-LL	1894DC11A64E69C0
2008-11-16	-anonymous-	NF-PM1	B1=750000
2007-10-17	Sturle Sunde	NF	no factor TF: 1-68
2005-03-20	dave_0273	NF	no factor TF: 1-62