Legion's number of the first kind is defined as
where 666 is the beast number. It has 1881 decimal
digits.
Legion's number of the second kind is defined as
It has approximately 
digits, and ends with 
trailing zeros.
See also
Apocalyptic Number,
Beast Number,
Evil Number,
Factorial,
Leviathan Number
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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 Numbers
Cite this as:
Weisstein, Eric W. "Legion's Numbers."
From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/LegionsNumbers.html
Subject classifications
