I was curious if anyone had tried encoding them in e.g. base64 and found this: https://tools.ietf.org/html/rfc1924 https://tools.ietf.org/html/rfc1924 base85.

I was curious if anyone had tried encoding them in e.g. base64 and found this: https://tools.ietf.org/html/rfc1924 https://tools.ietf.org/html/rfc1924 base85. Still 20 digits...Not much easier to remember. They are truly huge.