an Entity in Data Space: 134.155.108.49:8890
The enna-petaxis (formerly enna-petaksys) is equal to E1#1#1#9 in Hyper-E notation. The term was coined by Sbiis Saibian. In up-arrow notation, this number is equal to \(10\uparrow\uparrow\uparrow\uparrow 9\).