76 958 197 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 =	655000
B2 =	12936250

Status	Date	User	Residue	Shift	Software
Verified	2017-06-08	KC	1FC8F1DACCFD5430	63731807	Windows Service,Prime95,v28.9,build 2
Verified	2023-03-16	Reed_Young	1FC8F1DACCFD5430	2532516	Linux 64-bit,Prime95,v30.8,build 18

History

Date	User	Type	Result
2024-08-13	tbusby	NF	no factor TF: 73-74
2024-08-13	tbusby	NF	no factor TF: 72-73
2023-03-16	Reed_Young	C-LL	1FC8F1DACCFD5430
2017-06-08	KC	C-LL	1FC8F1DACCFD5430
2016-05-09	bam	NF-PM1	B1=655000, B2=12936250
2016-04-29	AirSquirrels	NF	no factor TF: 74-75
2016-04-26	Judge Hale	NF	no factor TF: 73-74
2016-04-26	Judge Hale	NF	no factor TF: 72-73
2016-04-02	Mark Rose	NF	no factor TF: 62-64
2015-12-05	RichD0	NF	no factor TF: 71-72
2013-01-02	Clown_Royal	NF	no factor TF: 70-71
2011-02-23	Patrick	NF	no factor TF: 69-70
2011-02-01	GrunwalderGIMP	NF	no factor TF: 68-69
2010-09-30	eon_blue_apocalypse	NF	no factor TF: 67-68
2010-09-27	S80_UK	NF	no factor TF: 66-67
2010-09-24	eXpressO	NF	no factor TF: 65-66
2010-09-24	-anonymous-	NF	no factor TF: 64-65
2004-06-12	markr	NF	no factor TF: 1-62
2000-08-10	-anonymous-	NF	no factor TF: 1-53