64 151 719 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	575000
B2 =	11356250

Status	Date	User	Residue	Shift	Software
Verified	2013-10-08	Kyle Z Schmidt	E29651057C99157B	41269035	Windows 64-bit,Prime95,v27.9,build 1
Verified	2023-04-02	Patrik Johansson	E29651057C99157B	1890636	Linux 64-bit,Prime95,v30.5,build 2

History

Date	User	Type	Result
2023-04-02	Patrik Johansson	C-LL	E29651057C99157B
2022-11-27	tottenhoff	NF	no factor TF: 74-75
2016-02-23	Mark Rose	NF	no factor TF: 60-63
2013-10-08	Kyle Z Schmidt	C-LL	E29651057C99157B
2013-09-16	owftheevil	NF-PM1	B1=575000, B2=11356250, E=6
2013-09-06	america64	NF	no factor TF: 73-74
2013-04-25	Kyle Askine	NF	no factor TF: 72-73
2013-04-25	Kyle Askine	NF	no factor TF: 71-72
2013-04-25	Kyle Askine	NF	no factor TF: 70-71
2012-01-29	america64	NF	no factor TF: 69-70
2009-10-08	Sturle Sunde	NF	no factor TF: 68-69
2009-10-06	Sturle Sunde	NF	no factor TF: 67-68
2009-10-05	-anonymous-	NF	no factor TF: 66-67
2009-09-30	-anonymous-	NF	no factor TF: 65-66
2009-04-12	trif	NF	no factor TF: 64-65
2009-03-08	gucs	NF	no factor TF: 63-64
2004-01-18	AxelFox	NF	no factor TF: 1-60
2003-08-25	Gordon Spence	NF	no factor TF: 1-59
1999-11-17	-anonymous-	NF	no factor TF: 1-50