Long scale

Long scale is one of the two main variants of -illion nomenclature for numbers,and is the original form devised by Nicolas Chuquet of France...it is based on powers of a million.

The competing short scale,now dominant in English-speaking countries,is based on powers of a thousand. Therefore the values allotted to -illion number names by the two scales steadily diverge: the second -illion,a Billion,is 109 in short scale and 1012 in long scale,but the tenth -illion,a decillion,is 1033 in short scale and 1060 in long scale,and the 100th -illion,a Centillion,is 10303 in short scale and 10600 in long scale.

In long scale,the usual practice is that intervening multiples of a thousand replace the final "on" of the next lower -illion with "ard" (thus 10603 is a centilliard,which in short scale takes 200 illions to reach instead of being before the 101st).