68 124 731 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 =	620000
B2 =	12710000

Status	Date	User	Residue	Shift	Software
Verified	2015-12-25	Kyle Z Schmidt	0D5EEF9188A6B0D3	44776237	Windows 64-bit,Prime95,v28.5,build 2
Verified	2024-01-29	-anonymous-	0D5EEF9188A6B0D3	60940858	Windows 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2024-01-29	-anonymous-	C-LL	0D5EEF9188A6B0D3
2015-12-25	Kyle Z Schmidt	C-LL	0D5EEF9188A6B0D3
2015-11-29	endless_mike	NF	no factor TF: 74-75
2014-07-20	TheJudger	NF-PM1	B1=620000, B2=12710000, E=12
2014-07-14	TheJudger	NF	no factor TF: 73-74
2014-07-14	TheJudger	NF	no factor TF: 72-73
2014-07-02	RichD0	NF	no factor TF: 71-72
2012-07-24	Clown_Royal	NF	no factor TF: 70-71
2012-03-06	nate.anders	NF	no factor TF: 69-70
2010-01-26	Torchwood Institute	NF	no factor TF: 68-69
2010-01-23	Torchwood Institute	NF	no factor TF: 67-68
2010-01-21	Torchwood Institute	NF	no factor TF: 66-67
2010-01-19	GrunwalderGIMP	NF	no factor TF: 65-66
2010-01-18	marvik	NF	no factor TF: 64-65
2008-12-08	1997rj7	NF	no factor TF: 1-64
2000-09-29	Joss	NF	no factor TF: 1-53