73 138 057 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 2⁷⁷

TF target 2⁷⁴

P-1

B1 =	675000
B2 =	14006250

Status	Date	User	Residue	Shift	Software
Bad	2014-03-16	Robert_SoCal	60795905F9F1D827	14360	CUDALucas v2.05 Beta
Verified	2016-11-29	endless_mike	67FB5B356A153938	59035741	Linux 64-bit,Prime95,v28.9,build 2
Verified	2017-01-21	MadPoo 🙂	67FB5B356A153938	178884	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2020-10-16	-anonymous-	NF	no factor TF: 76-77
2020-10-09	-anonymous-	NF	no factor TF: 75-76
2017-01-21	MadPoo 🙂	C-LL	67FB5B356A153938
2016-11-29	endless_mike	C-LL	67FB5B356A153938
2016-06-25	-anonymous-	NF	no factor TF: 74-75
2015-02-19	ktony	NF-PM1	B1=675000, B2=14006250, E=12
2015-02-07	Architects Cubed	NF	no factor TF: 73-74
2015-02-06	Architects Cubed	NF	no factor TF: 72-73
2015-02-06	Architects Cubed	NF	no factor TF: 71-72
2014-03-16	Robert_SoCal	C-LL	60795905F9F1D827
2013-04-28	Stuart Thompson	NF	no factor TF: 70-71
2012-10-09	MadPoo 🙂	NF	no factor TF: 69-70
2010-10-07	GrunwalderGIMP	NF	no factor TF: 68-69
2010-10-06	GrunwalderGIMP	NF	no factor TF: 67-68
2010-08-05	Per Jessen	NF	no factor TF: 66-67
2010-08-01	eon_blue_apocalypse	NF	no factor TF: 65-66
2010-07-29	Bold_Seeker	NF	no factor TF: 64-65
2008-06-28	George Woltman	NF	no factor TF: 1-64