38 360 723 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 =	440000
B2 =	8580000

Status	Date	User	Residue	Shift	Software
Verified	2008-09-16	Plamen Vassilev	234AA1795AFDD53B	22819094	Linux 32-bit,Prime95,v24 final,(aka Wc2)
Verified	2016-12-20	Dubslow	234AA1795AFDD53B	25421866	Linux 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2019-05-27	Sid & Andy	NF	no factor TF: 72-73
2019-02-05	monst	NF	no factor TF: 71-72
2016-12-20	Dubslow	C-LL	234AA1795AFDD53B
2014-12-23	Mark Rose	NF	no factor TF: 70-71
2014-12-23	Mark Rose	NF	no factor TF: 69-70
2013-09-11	Le Comte	NF	no factor TF: 68-69
2008-09-06	PVasilev	C-LL	234AA1795AFDD53B
2008-07-25	PVasilev	NF-PM1	B1=440000, B2=8580000
2006-07-25	ITS	NF	no factor TF: 1-68
2003-09-14	-anonymous-	NF	no factor TF: 1-59
2003-09-09	-anonymous-	NF	no factor TF: 1-60