The penta-petaxis (formerly penta-petaksys) is equal to E1#1#1#5 in Hyper-E Notation. The term was coined by Sbiis Saibian. In up-arrow notation, this number is equal to \(10\uparrow\uparrow\uparrow\uparrow 5\). Aarex Tiaokhiao calls this number qeenol.
| Graph IRI | Count |
|---|---|
| http://dbkwik.webdatacommons.org | 11 |