@alisonkiddle@mathstodon.xyz It's 1/2^10 versus 1/6^4; I know 2^10 = 1024 because it's the number of bytes in a kilobyte. 6^4 I don't know, but it's 36^2 - nope, that sounds hard. I've got 216 in my head - no, that's 180 + 36, so it's 6^3. But then 6^4 is 6*216, which is at least 1200, so 1/6^4 < 1/2^10 and we're done without having to do the full calculation.