79 539 619 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 =	695000
B2 =	14073750

Status	Date	User	Residue	Shift	Software
Verified	2017-03-01	Arthur Rosenthal	C9A957FCEEBBAAD7	20646283	Windows 64-bit,Prime95,v27.7,build 2
Verified	2026-01-05	Greg	C9A957FCEEBBAAD7	0	Linux64,PRPLL,v0.15
Verified	2026-01-12	irowiki	C9A957FCEEBBAAD7	18964	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2026-01-12	irowiki	C-LL	C9A957FCEEBBAAD7
2026-01-05	Greg	C-LL	C9A957FCEEBBAAD7
2025-07-29	Sid & Andy	NF	no factor TF: 75-76
2017-03-01	Arthur Rosenthal	C-LL	C9A957FCEEBBAAD7
2016-03-12	Kevin Jaget	NF-PM1	B1=695000, B2=14073750, E=6
2016-03-01	apocalypse	NF	no factor TF: 74-75
2016-03-01	apocalypse	NF	no factor TF: 73-74
2016-03-01	apocalypse	NF	no factor TF: 72-73
2016-03-01	apocalypse	NF	no factor TF: 71-72
2013-01-23	Houd Al-Obaidli	NF	no factor TF: 70-71
2010-12-21	Fred Cirera	NF	no factor TF: 69-70
2010-12-16	oilwarzonedotcom	NF	no factor TF: 68-69
2010-12-14	GrunwalderGIMP	NF	no factor TF: 67-68
2010-12-12	Craig Meyers	NF	no factor TF: 66-67
2010-12-12	Craig Meyers	NF	no factor TF: 65-66
2010-11-29	Architects Cubed	NF	no factor TF: 64-65
2009-05-29	Architects Cubed	NF	no factor TF: 63-64