Quote from Koremutake home page http://shorl.com/koremutake:
In an attempt to temporarily solve the fact that human beings seem
to be inable to remember important things (such as their names, car
keys and seemingly random numbers with fourteen digits in 'em), we
invented Koremutake.
It is, in plain language, a way to express any large number as a
sequence of syllables. The general idea is that word-sounding
pieces of information are a lot easier to remember than a sequence
of digits.