67 247 639 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 =	610000
B2 =	12505000

Status	Date	User	Residue	Shift	Software
Verified	2015-07-23	Kyle Z Schmidt	CFBA3158671B1F02	60765278	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-11-30	-anonymous-	CFBA3158671B1F02	40621104	Windows 64-bit,Prime95,v29.8,build 5

History

Date	User	Type	Result
2023-11-30	-anonymous-	C-LL	CFBA3158671B1F02
2015-07-23	Kyle Z Schmidt	C-LL	CFBA3158671B1F02
2015-06-14	megavink	NF	no factor TF: 74-75
2014-07-15	David Hruska	NF-PM1	B1=610000, B2=12505000, E=12
2014-05-03	brilong	NF	no factor TF: 73-74
2014-04-27	TheJudger	NF	no factor TF: 71-72
2014-04-27	TheJudger	NF	no factor TF: 72-73
2012-07-12	komoltsev	NF	no factor TF: 70-71
2012-02-20	Ravefiend	NF	no factor TF: 69-70
2010-03-08	ITS	NF	no factor TF: 68-69
2010-03-05	-anonymous-	NF	no factor TF: 67-68
2010-03-05	muffler	NF	no factor TF: 66-67
2010-03-04	korva	NF	no factor TF: 65-66
2009-12-29	steinrar	NF	no factor TF: 64-65
2008-12-13	Wojciech Florek	NF	no factor TF: 63-64