Which version? Which system?
Exactly what are you exporting with exactly which options to exactly where?
What are the dimensions of your Illustrator file and what resolution do you set for export?
Are you sure you need a 1,72 Gigabyte file? That will become 20833 X 29583 px.
If you want to keep the dimensions in pixels (5000x 7100) you just export as 72 ppi.
Good to hear that helped.