50 192 423 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 2⁷⁴

TF target 2⁷³

P-1

B1 =	580000
B2 =	14355000

Status	Date	User	Residue	Shift	Software
Verified	2013-02-14	]mh[ Virtek	A8589E7CD5A72B2B	40575328	Windows 64-bit,Prime95,v27.7,build 2
Verified	2020-03-02	Dubslow	A8589E7CD5A72B2B	43364334	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-03-02	Dubslow	C-LL	A8589E7CD5A72B2B
2018-12-16	Mark Rose	NF	no factor TF: 73-74
2016-01-01	AirSquirrels	NF	no factor TF: 72-73
2013-02-14	]mh[ Virtek	C-LL	A8589E7CD5A72B2B
2012-03-14	James Heinrich	NF	no factor TF: 69-72
2011-09-01	TheJudger	NF-PM1	B1=580000, B2=14355000
2008-10-14	tmorrow	NF	no factor TF: 1-69
2004-03-01	-anonymous-	NF	no factor TF: 1-61
2003-11-08	-anonymous-	NF	no factor TF: 1-60
2001-12-08	-anonymous-	NF	no factor TF: 1-58
2001-04-01	-anonymous-	NF	no factor TF: 1-57
2000-04-05	-anonymous-	NF	no factor TF: 1-56
2000-02-09	-anonymous-	NF	no factor TF: 1-54
2000-01-04	-anonymous-	NF	no factor TF: 1-53
1999-10-07	-anonymous-	NF	no factor TF: 1-53