Anyone ever count bits (as in powers of 2) in their head to relax or stave off boredom? Been doing it a few times a year, my whole life, ever since I was 8 or 9 years old. Usually it's when I'm stuck in a hospital or looney bin.
I have the first 16 memorized.
(2^16 = 65536)
My favorite number used to be 8 bits (256), but has since been eclipsed by 16 bits, (65,536.)