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- Newsgroups: sci.math
- Path: sparky!uunet!comp.vuw.ac.nz!canterbury.ac.nz!cosc.canterbury.ac.nz!chisnall
- From: chisnall@cosc.canterbury.ac.nz (The Technicolour Throw-up)
- Subject: Re: Centillion etc. (was Re: Negative Zero)
- Message-ID: <BzM39E.LwG@cantua.canterbury.ac.nz>
- Nntp-Posting-Host: cantua.canterbury.ac.nz
- Organization: Computer Science,University of Canterbury,New Zealand
- References: <djoyce.724343714@black.clarku.edu>
- Date: Mon, 21 Dec 1992 13:39:13 GMT
- Lines: 37
-
- From article <djoyce.724343714@black.clarku.edu>, by djoyce@black.clarku.edu (Dave Joyce):
- > It's unfortunate, but it seems number names
- >
- > billion, trillion, quadrillion, ..., centillion, ...
- >
- > do not have universal values. Depending on the country, a billion can be
- > either a thousand million or a million million, and so on for the rest.
- > Only a million has a universal value.
- >
- > I was thinking the other day about this very problem. Perhaps a solution
- > would be to "go metric". That is, use the metric prefixes for large numbers.
-
- Another solution, one that's probably occurred to many people, is to use a
- recursive scheme for building larger -illion numbers. You start with one
- million having the normal value and define a billion to be a million million.
- Next you define a trillion to be a billion billion, a quadrillion to be a
- trillion trillion, and so on, defining each -illion number as the square of
- the preceeding one.
-
- Under british nomenclature the nth -illion number is 10^{6n} while under
- american nomenclature it is 10^{3(n+1)}. Under the recursive scheme outlined
- above the nth -illion number is 10^{3*(2^n)}. So a billion is now 10^12, a
- trillion is 10^24, a quadrillion is 10^48 etc.
-
- I don't know about other people but I've often felt that both the british and
- american naming shemes rush through the numbers too quickly giving a new
- -illion name to just about everything. A billion trillion, for example, is a
- sexillion. Compare this with the recursive scheme which takes a much more
- leisurely stroll through the numbers giving out new -illion names much more
- sparingly. Now we find that a billion trillion is a number in it own right,
- lying between a trillion and a quadrillion. The recursive notation is much
- less redundant.
-
- --
- Just my two rubber ningis worth.
- Name: Michael Chisnall (chisnall@cosc.canterbury.ac.nz)
- I'm not a .signature virus and nor do I play one on tv.
-