User blog comment:Cian mullenz/Zombies/@comment-1187559-20151205191107/@comment-24737457-20151206182912

Diviunium was confirmed as 115 quite a while back...

Ununpentium was it's name for a while, because it has the same name IRL (Un = 1, Pent = 5, so Un-un-pent = 115)