Most chemical prints are decent in terms of longevity. However, even the most common "archive" prints using Fuji Crystal Archive pales (pun intended ) in comparison to those of ink jet archival prints. If you look at this page, Fuji Archival on a Frontier 370 (item 4) last for 40 years under their testing condition. Under the same testing condition, prints on Epson R1800 with PGPP last 104 years!
If you want to have archival prints, you need to check what kind of inks and printer being used.