80 733 193 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 =	4453000
B2 =	2078013210

Status	Date	User	Residue	Shift	Software
Verified	2018-07-20	curtisc	07979B3FBD8681AE	21218960	Windows Service,Prime95,v28.7,build 1
Bad	2025-11-22	Wes E.	D34C8B7E31A8D2EC	11663634	Windows 64-bit,Prime95,v30.19,build 20
Verified	2025-11-23	Greg	07979B3FBD8681AE	0	Linux64,prpll,v7.5

History

Date	User	Type	Result
2025-11-23	Greg	C-LL	07979B3FBD8681AE
2025-11-22	Wes E.	C-LL	D34C8B7E31A8D2EC
2025-09-29	Ensigma	NF-PM1	B1=4453000, B2=2078013210
2024-08-06	cramsey87	NF	no factor TF: 75-76
2018-07-20	curtisc	C-LL	07979B3FBD8681AE
2017-04-22	storm5510	NF-PM1	B1=635000, B2=8413750
2016-10-30	TheJudger	NF	no factor TF: 74-75
2016-10-25	Judge Hale	NF	no factor TF: 73-74
2016-09-12	Judge Hale	NF	no factor TF: 72-73
2016-09-12	Judge Hale	NF	no factor TF: 71-72
2013-08-08	SMoffat	NF	no factor TF: 70-71
2013-02-02	Bold_Seeker	NF	no factor TF: 69-70
2013-01-28	Bold_Seeker	NF	no factor TF: 68-69
2013-01-26	Bold_Seeker	NF	no factor TF: 67-68
2013-01-25	Bold_Seeker	NF	no factor TF: 66-67
2011-08-09	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-11	Architects Cubed	NF	no factor TF: 64-65