43 339 603 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 2⁷⁶

TF target 2⁷²

P-1

B1 =	515000
B2 =	11845000

Status	Date	User	Residue	Shift	Software
Verified	2009-10-13	Kyle Z Schmidt	DDBDA70595489917	23408336	Windows,Prime95,v25.9,build 4
Verified	2018-03-10	srow7	DDBDA70595489917	9437061	Linux 64-bit,Prime95,v29.4,build 5

History

Date	User	Type	Result
2024-07-18	Joe S.	NF	no factor TF: 68-69
2021-03-06	-anonymous-	NF	no factor TF: 75-76
2021-03-03	-anonymous-	NF	no factor TF: 74-75
2020-01-01	-anonymous-	NF	no factor TF: 73-74
2019-09-30	-anonymous-	NF	no factor TF: 72-73
2018-03-10	srow7	C-LL	DDBDA70595489917
2015-09-18	-anonymous-	NF	no factor TF: 71-72
2015-09-18	-anonymous-	NF	no factor TF: 70-71
2015-04-02	LaurV	NF	no factor TF: 69-70
2014-05-13	Architects Cubed	NF	no factor TF: 68-69
2009-10-13	Kyle Z Schmidt	C-LL	DDBDA70595489917
2009-05-24	ANONYMOUS	NF-PM1	B1=515000, B2=11845000
2007-08-14	JC_Herles	NF	no factor TF: 1-68