List of googologisms/Uncomputable numbers

Smaller numbers


 * $\Sigma(1000)$
 * $\Sigma(\Sigma(1000))$
 * Fish number 4, $$F_4^{63}(3)$$
 * $\Xi(10^6)$
 * Rayo's number, Rayo(10100)
 * Rayo-plex, Rayo(Rayo's number)
 * Fish number 7, $$F_7^{63}(10^{100})$$
 * BIG FOOT, FOOT10(10100)
 * BIG FOOT-plex, FOOT10(BIG FOOT)