9906753

9906753 was the number of a strange cargo container which was stored aboard the Eravana, a Baleen-class heavy freighter captained by the Human smuggler Han Solo and his Wookiee First Mate Chewbacca. By the time in which Solo and Chewie recovered the Millennium Falcon, they had been unable to break the cargo module's crypto lock.

Behind the scenes
The number 9906753 is a reference to the Indiana Jones franchise, specifically to the identifying number of the crate in which the Ark of the Covenant was stored at the end of the 1981 film Raiders of the Lost Ark which was then briefly seen in the 2008 film Indiana Jones and the Kingdom of the Crystal Skull.