Legion's number of the second kind is equal to \(666!^{666!} \approx 10^{1.609941\times10^{1,596}}\), where \(666!\) represents the factorial of 666.[1]
Sources
See also
Specific numbers: Beast number · Belphegor's prime · Hyper-leviathan number · Legion's number of the first kind · Legion's number of the second kind · Leviathan number
Forms of numbers: apocalypse number · apocalyptic number · apocalyptri number · apocalyptetra number · apocalypenta number · apocalyhexakosioihexekontahexa number