80 543 129 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 =	680000
B2 =	13600000

Status	Date	User	Residue	Shift	Software
Verified	2018-02-09	Michael Bahlen	103AA0A6A3266ACA	23524217	Windows Service,Prime95,v28.5,build 2
Verified	2025-12-26	d3ef	103AA0A6A3266ACA	38870416	Linux 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2025-12-26	d3ef	C-LL	103AA0A6A3266ACA
2025-09-17	Kyle Askine	NF	no factor TF: 75-76
2018-02-09	Michael Bahlen	C-LL	103AA0A6A3266ACA
2017-01-23	arnaud	NF-PM1	B1=680000, B2=13600000, E=6
2016-09-12	AirSquirrels	NF	no factor TF: 74-75
2016-09-12	AirSquirrels	NF	no factor TF: 73-74
2016-09-12	AirSquirrels	NF	no factor TF: 72-73
2014-01-22	Massimo Cappelli (ik5pwa)	NF	no factor TF: 71-72
2013-01-31	Davin	NF	no factor TF: 70-71
2013-01-31	Davin	NF	no factor TF: 69-70
2013-01-31	Davin	NF	no factor TF: 68-69
2013-01-30	phoenicis	NF	no factor TF: 67-68
2011-01-27	marnes	NF	no factor TF: 66-67
2011-01-23	GrunwalderGIMP	NF	no factor TF: 65-66
2010-12-10	Architects Cubed	NF	no factor TF: 64-65