Tramsaction taking long, 1 part is spent
Some exchanges combine many transactions into a single transaction when withdrawing, to save fees and be more efficient with space. It will likely confirm eventually, you'll just have to wait for a miner to put it in a block. One output could be spent already because it is possible to spend from unconfirmed outputs, just slightly more risky.

See also: Why is my transaction not getting confirmed and what can I do about it?