Megafugaeighteen is equal to \(18\uparrow\uparrow18\) in arrow notation or 18 tetrated to 18 or 18 pentated to 2. It is approximately equal to \(E49,390,464,231,494,436,119,284\#16\) in Hyper-E notation.
The name is formed by adding the megafuga- prefix to 18.
See also Edit
Numbers named with the fuga- family of prefixes