I can’t say what inspired 19 in the mind of the author, but the thing on the page is that 19 is the tipping point. It goes from 96% collision at 19 to 27% at 20

I can’t say what inspired 19 in the mind of the author, but the thing on the page is that 19 is the tipping point. It goes from 96% collision at 19 to 27% at 20. It’s the most amount of digits where you’ll probably have a collision.