43 175 683 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 2⁷²

P-1

B1 =	505000
B2 =	10100000

Status	Date	User	Residue	Shift	Software
Verified	2010-02-17	David J. Stucki	8A6C129285C1F8C1	40208741	Windows,Prime95,v25.7,build 3
Bad	2016-02-05	Tha	DDA77236747D6E08	21104523	Linux 64-bit,Prime95,v28.7,build 1
Verified	2016-02-06	Tha	8A6C129285C1F8C1	22785378	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2024-06-19	James Heinrich	NF	no factor TF: 69-70
2020-01-10	-anonymous-	NF	no factor TF: 73-74
2019-09-28	Random GPUs	NF	no factor TF: 72-73
2016-02-06	Tha	C-LL	8A6C129285C1F8C1
2016-02-05	Tha	C-LL	DDA77236747D6E08
2015-10-08	AirSquirrels	NF	no factor TF: 71-72
2015-09-09	Bruno Victal	NF	no factor TF: 70-71
2015-07-01	Carsten Kossendey	NF	no factor TF: 69-70
2014-03-13	Torben K.	NF	no factor TF: 68-69
2010-02-17	David J. Stucki	C-LL	8A6C129285C1F8C1
2008-12-30	FCG Primes	NF-PM1	B1=505000, B2=10100000
2007-08-14	raymondf	NF	no factor TF: 1-68