79 403 503 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 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	670000
B2 =	13400000

Status	Date	User	Residue	Shift	Software
Verified	2017-02-24	curtisc	B2F57A2F7682E3C7	30082605	Windows Service,Prime95,v28.7,build 1
Verified	2025-12-31	0x	B2F57A2F7682E3C7	0	Windows64,PRPLL,v0.15
Verified	2026-02-11	lhunt	B2F57A2F7682E3C7	10082603	Windows 64-bit,Prime95,v30.19,build 14

History

Date	User	Type	Result
2026-02-11	lhunt	C-LL	B2F57A2F7682E3C7
2025-12-31	0x	C-LL	B2F57A2F7682E3C7
2025-08-03	Jurzal	NF	no factor TF: 75-76
2017-02-24	curtisc	C-LL	B2F57A2F7682E3C7
2016-09-21	bam	NF-PM1	B1=670000, B2=13400000
2016-08-11	Mark Rose	NF	no factor TF: 74-75
2016-08-11	Mark Rose	NF	no factor TF: 73-74
2016-08-07	cuBerBruce	NF	no factor TF: 72-73
2016-02-22	Judge Hale	NF	no factor TF: 71-72
2014-02-27	-anonymous-	NF	no factor TF: 70-71
2013-02-04	wangyun183	NF	no factor TF: 69-70
2012-04-18	giheff	NF	no factor TF: 68-69
2011-04-10	Carsten Kossendey	NF	no factor TF: 67-68
2011-04-10	Carsten Kossendey	NF	no factor TF: 65-67
2010-11-26	riccardo uberti	NF	no factor TF: 64-65
2009-05-29	Architects Cubed	NF	no factor TF: 63-64