Re: [math-fun] zetta, yotta, what next?

10^15 blorts is a Petablort, not an Exablort. Lots of people seem to have a blind spot for the Peta prefix. I wonder what happened to beautiful sequence of prefixes suggested by a minority about fifteen years ago? Kilo, Mega, Giga, Tera, Peta, Exa, Heta, Oto, Nea Starting from Tera, they are derived by doing some sort of surgery on the Greek word for the log base-1000. For Tera, Peta, and Exa, I believe this is just a coincidence; the idea behind the extension to Heta, Oto, and Nea is to pretend that the coincidence was intentional. Look: it still has unique initial letters, so the KB, MB, GB, TB system can be extended without ambiguity. --ACW