Legion's Numbers
Legion's number of the first kind is defined as
L_1 = 666^(666)
(1)
where 666 is the beast number. It has 1881 decimal digits.
Legion's number of the second kind is defined as
L_2 = 666!^(666!)
(3)
It has approximately 1.609941×10^(1596) digits, and ends with 165·666! trailing zeros.
See also
Apocalyptic Number, Beast Number, Evil Number, Factorial, Leviathan NumberExplore with Wolfram|Alpha
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References
Pickover, C. A. "Legion's Number." Ch. 28 in The Mathematics of Oz: Mental Gymnastics from Beyond the Edge. New York: Cambridge University Press, pp. 64-65 and 269-274, 2002.Referenced on Wolfram|Alpha
Legion's NumbersCite this as:
Weisstein, Eric W. "Legion's Numbers." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/LegionsNumbers.html