43 696 487 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 2⁷³

TF target 2⁷²

P-1

B1 =	730000
B2 =	730000

Status	Date	User	Residue	Shift	Software
Bad	2008-09-16	C. Cooper / S. Boone	7F904BD0DAB10790	26662442	Windows,Prime95,v24 final,NT service,(aka Wc5)
Verified	2015-08-26	George Woltman	3CFC37B2D280FDB8	10341271	Windows 64-bit,Prime95,v28.6,build 1
Verified	2016-09-03	Mark Rose	3CFC37B2D280FDB8	17262523	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-06-25	Greg	NF	no factor TF: 69-70
2018-08-07	-anonymous-	NF	no factor TF: 72-73
2016-09-03	Mark Rose	C-LL	3CFC37B2D280FDB8
2015-08-26	George Woltman	C-LL	3CFC37B2D280FDB8
2015-08-07	Sid & Andy	NF	no factor TF: 71-72
2015-07-23	Mark Rose	NF	no factor TF: 70-71
2015-03-17	kracker	NF	no factor TF: 69-70
2014-04-19	Axelsson	NF	no factor TF: 68-69
2008-09-06	curtisc	C-LL	7F904BD0DAB10790
2008-07-12	curtisc	NF-PM1	B1=730000
2007-09-13	-anonymous-	NF	no factor TF: 1-68
2007-09-13	ComputerraRU	NF	no factor TF: 62-63