7 699 837 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
472549089554314145019767	24	78.6	2018-06-09 06:35:38

ECM

Digits	B1	Curves
25	50000	5 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Bad	1999-11-10	Garth Johnson	2883CE3EC4D3B5E9	4056212
Verified (Factored)	2002-08-03	Robin Stevens	BA9E52AB5EAE039D	4561825
Verified (Factored)	2002-11-09	Ars Technica Team Prime Rib	BA9E52AB5EAE039D	780914

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-22	francijezek	C2CA47953538AD13	1	6366998	5	3
Verified	2018-06-25	_p95holder_	C2CA47953538AD13	1	7460711	5	3

History

Date	User	Type	Result
2018-06-25	_p95holder_	C-PRP	M7699837/472549089554314145019767 : C2CA47953538AD13 PRP: Verified PRP without proof (not generated)
2018-06-22	francijezek	C-PRP	M7699837/472549089554314145019767 : C2CA47953538AD13 PRP: Verified PRP without proof (not generated)
2018-06-09	arnaud	F-ECM	Factor: 472549089554314145019767 / (ECM curve 2, B1=50000, B2=5000000)
2016-09-21	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-12	VictordeHollander	NF	no factor from 2^65 to 2^66
2013-12-10	David Campeau	NF	no factor from 2^64 to 2^65
2013-10-12	Nesowa	NF	no factor from 2^63 to 2^64
2012-08-09	Nesowa	NF-PM1	B1=95000, B2=1757500, E=6