80 740 679 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 2⁷⁵

P-1

B1 =	675000
B2 =	12825000

Status	Date	User	Residue	Shift	Software
Bad	2017-05-18	bradmtl	0EFBD29C23CCB106	41473763	Windows 64-bit,Prime95,v28.7,build 1
Verified	2018-10-12	ATH	86A21829611A744E	40384436	CUDALucas v2.06beta
Verified	2019-04-21	endless_mike	86A21829611A744E	58027361	Linux 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2019-04-21	endless_mike	C-LL	86A21829611A744E
2018-10-12	ATH	C-LL	86A21829611A744E
2017-05-18	bradmtl	C-LL	0EFBD29C23CCB106
2017-03-23	Pi_Rho	NF-PM1	B1=675000, B2=12825000
2016-09-01	Judge Hale	NF	no factor TF: 74-75
2016-09-01	Judge Hale	NF	no factor TF: 73-74
2016-09-01	Judge Hale	NF	no factor TF: 72-73
2016-09-01	Judge Hale	NF	no factor TF: 71-72
2011-02-10	steinrar	NF	no factor TF: 70-71
2011-02-10	steinrar	NF	no factor TF: 69-70
2011-02-09	KarlMJ	NF	no factor TF: 68-69
2011-02-08	Per Jessen	NF	no factor TF: 67-68
2011-02-03	BasementCat	NF	no factor TF: 66-67
2011-01-31	ITS	NF	no factor TF: 65-66
2010-12-13	Architects Cubed	NF	no factor TF: 64-65