66 424 873 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 =	640000
B2 =	13600000

Status	Date	User	Residue	Shift	Software
Verified	2015-04-08	Kyle Z Schmidt	B24CEC57129B5F54	54961735	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-05-06	-anonymous-	B24CEC57129B5F54	21911497	Mac OS X 64-bit,Prime95,v26.6,build 3

History

Date	User	Type	Result
2023-05-06	-anonymous-	C-LL	B24CEC57129B5F54
2015-04-08	Kyle Z Schmidt	C-LL	B24CEC57129B5F54
2015-03-06	blip	NF	no factor TF: 74-75
2014-05-04	TheJudger	NF	no factor TF: 73-74
2014-04-27	TheJudger	NF-PM1	B1=640000, B2=13600000, E=12
2014-04-20	TheJudger	NF	no factor TF: 72-73
2014-04-20	TheJudger	NF	no factor TF: 71-72
2013-04-01	ITS	NF	no factor TF: 70-71
2012-02-15	Peter Yu	NF	no factor TF: 69-70
2010-06-14	TRUSTNO1	NF	no factor TF: 68-69
2010-06-07	jomateix	NF	no factor TF: 67-68
2009-12-04	ANONYMOUS	NF	no factor TF: 66-67
2009-11-30	GrunwalderGIMP	NF	no factor TF: 65-66
2009-11-29	JMGarcia	NF	no factor TF: 64-65
2009-03-29	1997rj7	NF	no factor TF: 1-64