A while ago, the
SI proposed a set of prefixes that would
distinguish between powers of
1000 and
1024. The powers of 1024 got the prefixes: kibi, mebi, gibi, tebi, pebi, exbi, zebi, and yobi.
Unfortunately, these sound bloody stupid. Especially when prefixed to byte or bit, as they were likely to be. The other problem is that most people pronounce "giga" with two hard G's, so it would be very hard to tell "gibi" apart from "kibi" when pronounced.
So those prefixes were never really accepted. Which is sad, because if they didn't have such idiotic names they'd be quite useful.
I have my own proposal for metric prefixes based on 1024. The trick is to put the b in a different place, and change it to a d when necessary.
The following is a table of the base-1000 prefixes, SI base-1024 prefixes, and my base-1024 prefixes.
1000 SI-1024 my-1024
-----------------------
10^3 kilo kibi kiblo 2^10
10^6 mega mebi megda 2^20
10^9 giga gibi gigda 2^30
10^12 tera tebi tebra 2^40
10^15 peta pebi pebta 2^50
10^18 exa exbi bexa 2^60
10^21 zetta zebi zebta 2^70
10^24 yotta yobi yobta 2^80
10^27 harpi ? harbi 2^90
10^30 grouchi ? grodi 2^100
10^33 zeppi ? zedi 2^110
10^36 gummi ? gumbi 2^120
10^39 chici ? chidi 2^130