Tangetially related: For the people who don't know, I found out recently that x!! isn't the same as (x!)! (repeated factorial), in fact, !! is a LOT less big than repeated factorial.

For example, while 30!! is 4.286 x 10^16 (so a number with 17 digits), doing 30! and then ! the result of that, would be a number with an unfathomable 10^33 digits.

n!! is its own operator called the "double factorial" and is even smaller than the regular !, because it's the product of only the odd numbers up to n.

Edit: escape characters

Biblically accurate millipede

I think 30 should look better than 15.
Like 7 legs on each side and one in the back as mechanical afterburner?