34 538 591 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 2⁷¹

P-1

B1 =	500000
B2 =	9000000

Status	Date	User	Residue	Shift	Software
Verified	2005-10-04	Charles Longeau	7E5331E8F3A4C918	31032257	Linux 32-bit,Prime95,v24 middle,(aka Wb2)
Verified	2015-08-24	Greg	7E5331E8F3A4C918	25983795	Windows 64-bit,Prime95,v28.5,build 2
Verified	2015-09-09	Dubslow	7E5331E8F3A4C918	14103866	Linux 64-bit,Prime95,v28.6,build 1

History

Date	User	Type	Result
2024-05-30	Chuck	NF	no factor TF: 68-69
2019-11-08	-anonymous-	NF	no factor TF: 71-72
2019-11-08	-anonymous-	NF	no factor TF: 72-73
2015-09-09	Dubslow	C-LL	7E5331E8F3A4C918
2015-08-24	Greg	C-LL	7E5331E8F3A4C918
2015-02-11	HBendtz	NF-PM1	B1=500000, B2=9000000, E=12
2014-03-07	The Mawn	NF	no factor TF: 70-71
2014-03-07	The Mawn	NF	no factor TF: 69-70
2013-08-16	Carsten Kossendey	NF	no factor TF: 68-69
2005-10-04	-anonymous-	C-LL	7E5331E8F3A4C918
2005-05-12	-anonymous-	NF-PM1	B1=325000, B2=1625000
2005-04-26	-anonymous-	NF	no factor TF: 1-68
2003-09-29	mdrg	NF	no factor TF: 1-62