Like Matt suggested, you can try a title search. It depends on Utah's laws/policies for record storage/release of info, but you may be able to find the person who originally bought your car at auction, for research purposes, using that title number. Some states keep copies of the original titles on microfiche, and you also may be able to find the title number (or a copy) of the original title from UHP using that second title number.
EDIT. Brian beat me to it.
