As such a large element, its very very unstable and as far a I know, hasn't existed for more than a few fractions of a second, and even then that's only under laboratory conditions.
On the contrary, I have an amusingly designed cocktail stick dispenser made of it, a souvenir of Rhyll, in my weird shit draw. The cocktail sticks keep falling out, which I had put down to poor design, but I'm wondering now whether it might be a consequence of atomic instability.
"We all have flaws, and mine is being wicked." James Thurber, The Thirteen Clocks 1951
Turns out IUPAC decided Cp was a bad symbol for it, one of the reasons being the reason I gave in post 1, so they've gone for Cn instead. I'm much happier about the whole issue now.
