Thanks.  I infer from 
http://fr.wikipedia.org/wiki/Liste_des_nombres
that the nomenclature is:

Numbers of the form 10^3*k are named.  10^3 is 
mille; 10^6 is million; and for k>1, 10^(6*k) is 
the Latin for k>1 prefaced to -illion and 
10^(6*k)+3 is the Latin for k prefaced to -illiard. 
Thus:
10^12  billion
10^15  billiard
10^18  trillion
10^21  trilliard
...
10^120 vigintillion
10^123 vigintilliard
...



----- Original Message -----
From: Pascal Heus <[EMAIL PROTECTED]>
Date: Wednesday, June 13, 2007 8:19 pm
Subject: Re: [Jprogramming] Numbers in French

> Roger:
> - 10^6 is "million", 10^9 is "milliard", 10^12 is "billion", 10^15 is
> "nilliard", and 10^18 is "trillion"
> - in (a) 73 is soixante-treize (not treis)
> - in (b) "dix-mille" is actually correct for 10,000, dix-millième is
> 1/10,000
> Now if you want a real fun part, in Belgium for "70" and "90" we say
> 'septante" et "nonante" instead of "soixante-dix" and "quatre-
> vingt-dix"
> in French.
> And for the record, the swiss also use "huitante" ou "octante" instead
> of qutare-vingt" for 80. So belgian and swiss compliance might be more
> tricky to implement :-)
> See the following Wikipedia page:
> http://fr.wikipedia.org/wiki/Nombres_en_fran%C3%A7ais
> http://fr.wikipedia.org/wiki/Nom_des_grands_nombres
> http://fr.wikipedia.org/wiki/Liste_des_nombres
> best
> Pascal
> 
> Roger Hui wrote:
> > I am contemplating adding a French section to
> > http://www.jsoftware.com/jwiki/Essays/Number_in_Words
> > I would appreciate it if members of Forum whose
> > mother tongue is French can verify or correct
> > the following description:
> >
> > The name in French of a non-negative integer 
> > is formed on groups of 3 digits, starting from 
> > the right.  Each group is suffixed with the name 
> > of the unit, and a group of three 0-digits 
> > is omitted (unless all groups are all 0-digits, 
> > in which case the name is "zéro"). 
> >
> > French units (10^3*k) are the same as English 
> > units with "mille" replacing "thousand", 
> > "milliard" replacing "billion", and "décillion" 
> > replacing "decillion".  (Will I be laughed
> > at if I use "billion" instead of "milliard"?)
> >
> > There are a few idiomatic rules:
> >
> > a. 71 is "soixante et onze" but 72 is 
> > "soixante-douze", 73 is "soixante-treis", etc.
> > (Will I be laughed at if I say "soixante-onze"?)
> >
> > b. 10,000 is "dix-millièmes" even though
> > 9,000 is "neuf mille" and 11,000 is "onze mille".
> > (Will I be laughed at if I say "dix mille"?)
> >
> > c. Numbers between 100 and 199 omit the 
> > leading "un".  Thus 175 is "cent soixante-quinze" 
> > but 275 is "deux cents soixante-quinze".  
> >
> > d. Likewise, numbers between 1000 and 1999 omit
> > the leading "un".
> >
> > e. After "million", "milliard" ("billion"), or
> > "trillion", there is a "de" before the trailing
> > words.  Thus, 1,004,224,000 is "un milliard de
> > quatre millions de deux cents vingt-quatre mille".
> >
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