44 155 807 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 =	14177500

Status	Date	User	Residue	Shift	Software
Bad	2010-04-01	Christian Geschwentner	AACC5DBED84B2215	15318330	Windows,Prime95,v25.9,build 4
Verified	2015-11-20	Greg	87689CD51CE6B125	31732882	CUDALucas v2.05 Beta
Verified	2016-09-05	Mark Rose	87689CD51CE6B125	16130858	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2022-04-10	TheJudger	NF	no factor TF: 73-74
2022-04-10	TheJudger	NF	no factor TF: 72-73
2016-09-05	Mark Rose	C-LL	87689CD51CE6B125
2015-11-20	Greg	C-LL	87689CD51CE6B125
2015-10-16	-anonymous-	NF	no factor TF: 71-72
2015-05-27	Mark Rose	NF	no factor TF: 70-71
2015-05-24	David Campeau	NF	no factor TF: 69-70
2014-02-05	LaurV	NF	no factor TF: 68-69
2010-04-01	Christian Geschwentner	C-LL	AACC5DBED84B2215
2009-12-25	Christian Geschwentner	NF-PM1	B1=535000, B2=14177500
2007-10-17	PrimeCruncher	NF	no factor TF: 1-68
2004-08-06	dave_0273	NF	no factor TF: 1-62