The flexinega (also called "brantomega") is equal to M(betomega,5) in Hyper-Moser notation. The number was invented by Aarex Tiaokhiao. In the up-arrow notation flexinega is between \(2 \uparrow^5 (2 \uparrow^5 3)\) and \(2 \uparrow^5 (2 \uparrow^5 4)\).