OFFSET
1,2
COMMENTS
The factorial of 10^666, called the Leviathan number by Clifford A. Pickover, is 10^(6.655657055...*10^668), which means that it has approximately 6.656*10^668 decimal digits. The number of trailing zeros is Sum_{k=1..952} floor(10^666/5^k) = 25*10^664 - 143. The last nonzero digits are ...708672.
REFERENCES
Clifford A. Pickover: Wonders of Numbers. Adventures in Mathematics, Mind, and Meaning. New York: Oxford University Press, 2001, p. 351.
LINKS
Martin Renner, Table of n, a(n) for n = 1..984
Robert P. Munafo, Notable Properties of Specific Numbers - (10^666)!
Eric W. Weisstein, Leviathan number. From MathWorld - A Wolfram Web Resource.
CROSSREFS
KEYWORD
nonn,base,fini
AUTHOR
Martin Renner, Nov 16 2016
STATUS
approved