43 731 869 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 =	525000
B2 =	13650000

Status	Date	User	Residue	Shift	Software
Bad	2009-12-01	eskifullofbeer	5623F60BD5FCEEA0	14092583	Windows,Prime95,v25.9,build 4
Verified	2015-08-29	MadPoo 🙂	95F36825E06B9D21	38649993	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2016-09-16	Mark Rose	95F36825E06B9D21	32226811	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2018-08-03	-anonymous-	NF	no factor TF: 72-73
2016-09-16	Mark Rose	C-LL	95F36825E06B9D21
2015-08-29	MadPoo 🙂	C-LL	95F36825E06B9D21
2015-08-20	Sid & Andy	NF	no factor TF: 71-72
2015-04-29	Mark Rose	NF	no factor TF: 70-71
2015-04-16	David Campeau	NF	no factor TF: 69-70
2014-04-16	kracker	NF	no factor TF: 68-69
2009-12-01	eskifullofbeer	C-LL	5623F60BD5FCEEA0
2009-11-02	eskifullofbeer	NF-PM1	B1=525000, B2=13650000
2007-09-13	smintheus	NF	no factor TF: 1-68