72 647 011 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 =	980000
B2 =	21315000

Status	Date	User	Residue	Shift	Software
Bad	2014-03-25	Robert_SoCal	897310AE80AE39A7	57812626	CUDALucas v2.05 Beta
Verified	2016-04-09	MadPoo 🙂	2B3AF4EBDDB7C281	17505288	Windows 64-bit,Prime95,v26,(aka We4)
Bad	2016-10-14	AirSquirrels	E110C55AC7F4B4B1	48611180	CUDALucas v2.05.1
Verified	2016-10-29	ATH	2B3AF4EBDDB7C281	42391042	Windows 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2016-10-29	ATH	C-LL	2B3AF4EBDDB7C281
2016-10-14	AirSquirrels	C-LL	E110C55AC7F4B4B1
2016-04-09	MadPoo 🙂	C-LL	2B3AF4EBDDB7C281
2015-09-12	Jerry Hallett	NF-PM1	B1=980000, B2=21315000, E=12
2015-09-07	bwn	NF	no factor TF: 74-75
2015-09-06	bwn	NF	no factor TF: 73-74
2015-09-06	bwn	NF	no factor TF: 72-73
2015-03-09	srow7	NF	no factor TF: 71-72
2014-03-25	Robert_SoCal	C-LL	897310AE80AE39A7
2013-05-05	Per Jessen	NF	no factor TF: 70-71
2012-10-02	Bold_Seeker	NF	no factor TF: 69-70
2010-07-10	CreweNet	NF	no factor TF: 68-69
2010-06-20	vats09	NF	no factor TF: 67-68
2010-05-27	Vince	NF	no factor TF: 66-67
2010-05-24	Vince	NF	no factor TF: 65-66
2010-05-20	GrunwalderGIMP	NF	no factor TF: 64-65
2008-09-19	Wojciech Florek	NF	no factor TF: 1-64
2002-05-25	Joss	NF	no factor TF: 1-57