The Force Awakens is the first Star Wars movie to ever be the same number as its episode number.

A New Hope: 1st movie, 4th episode Empire: 2nd movie, 5th episode Jedi: 3rd movie, 6th episode Phantom Menace: 4th movie, 1st episode Clones: 5th movie, 2nd episode Sith: 6th movie, 3rd episode Force Awakens: 7th movie, 7th episode