72 116 813 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	665000
B2 =	13965000

Status	Date	User	Residue	Shift	Software
Bad	2013-08-26	Robert_SoCal	55752574B3262C6E	0	CUDALucas v2.03
Verified	2016-12-04	endless_mike	750F93AA9D0C6194	34595195	Linux 64-bit,Prime95,v28.9,build 2
Verified	2017-01-02	MadPoo 🙂	750F93AA9D0C6194	53133993	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2017-01-02	MadPoo 🙂	C-LL	750F93AA9D0C6194
2016-12-04	endless_mike	C-LL	750F93AA9D0C6194
2016-08-26	monst	NF	no factor TF: 74-75
2014-09-24	Architects Cubed	NF-PM1	B1=665000, B2=13965000, E=12
2014-09-07	Jerry Hallett	NF	no factor TF: 73-74
2014-09-07	Jerry Hallett	NF	no factor TF: 72-73
2014-09-07	Jerry Hallett	NF	no factor TF: 71-72
2013-08-26	Robert_SoCal	C-LL	55752574B3262C6E
2013-07-11	Manpowre	NF	no factor TF: 70-71
2012-10-06	Lelikoid	NF	no factor TF: 69-70
2010-07-15	GrunwalderGIMP	NF	no factor TF: 68-69
2010-07-14	Xorsist	NF	no factor TF: 67-68
2010-07-13	oodaira	NF	no factor TF: 66-67
2010-07-12	Erik	NF	no factor TF: 65-66
2010-07-06	Haga	NF	no factor TF: 64-65
2008-09-19	Wojciech Florek	NF	no factor TF: 1-64