The megisiquadruon is equal to megisitruon in a circle, using circle notation, or M(Megisitruon,3) using Hyper-Moser notation. The term was coined by Aarex Tiaokhiao. In the up-arrow notation, megisiquadruon is between \(2 \uparrow^{4} 6\) and \(2 \uparrow^{4} 7\)