70 506 061 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 =	645000
B2 =	13222500

Status	Date	User	Residue	Shift	Software
Verified	2015-10-19	Kyle Z Schmidt	A8672AD219D65F46	46164815	Windows 64-bit,Prime95,v28.5,build 2
Verified	2015-10-25	CSLatDD	A8672AD219D65F46	43697624	Windows 64-bit,Prime95,v27.7,build 2

History

Date	User	Type	Result
2015-10-25	CSLatDD	C-LL	A8672AD219D65F46
2015-10-19	Kyle Z Schmidt	C-LL	A8672AD219D65F46
2015-09-25	Greg	NF	no factor TF: 74-75
2014-11-14	megavink	NF-PM1	B1=645000, B2=13222500, E=12
2014-11-11	Chuck	NF	no factor TF: 73-74
2014-11-10	Bdot	NF	no factor TF: 72-73
2014-09-26	srow7	NF	no factor TF: 71-72
2013-04-03	SMoffat	NF	no factor TF: 70-71
2012-05-03	sikafarmi_rendering_farm	NF	no factor TF: 69-70
2012-05-03	-anonymous-	NF	no factor TF: 69-70
2010-03-02	dtlgc	NF	no factor TF: 68-69
2010-02-24	-anonymous-	NF	no factor TF: 67-68
2010-02-23	-anonymous-	NF	no factor TF: 66-67
2010-02-23	Sturle Sunde	NF	no factor TF: 65-66
2010-02-21	Sturle Sunde	NF	no factor TF: 64-65
2008-11-24	Wojciech Florek	NF	no factor TF: 1-64
2007-09-13	Amperio	NF	no factor TF: 1-63