Nicolas Chuquet

Nicolas Chuquet
Born	1445 or c. 1455  France Paris
Died	1488 or c. 1500  France Lyon
Nationality	French
Education	Bachelors degree in medicine
Occupation	Mathematician

Nicolas Chuquet (1445, but some sources say c. 1455 – 1488, some sources say c. 1500) was a French mathematician whose great work, Triparty en la science des nombres [1] [2], was unpublished in his lifetime. Most of it, however, was copied without attribution by Estienne de La Roche in his 1520 textbook, l'Arismetique. In the 1870s, scholar Aristide Marre discovered Chuquet's manuscript and published it in 1880. The manuscript contained notes in de la Roche's handwriting.

Chuquet was born in Paris, France, and died in Lyon. His thinking was clearly far ahead of its time. He invented his own notation for algebraic concepts and exponentiation. He may have been the first mathematician to recognize zero and negative numbers as exponents.

His book shows a huge number divided into groups of six digits, and in a short passage he states that the groups can be called

"million, the second mark byllion, the third mark tryllion, the fourth quadrillion, the fifth quyillion, the sixth sixlion, the seventh septyllion, the eighth ottyllion, the ninth nonyllion and so on with others as far as you wish to go.

Because of this, he is sometimes credited as the inventor of the modern names for large numbers. However, this is an oversimplification. The word million had been in use centuries prior to Chuquet.

In 1475, Jehan Adam recorded the words "bymillion" and "trimillion" (for 10¹² and 10¹⁸) and it is believed that these words or similar ones were in general use at that time. Chuquet was, however, the original author of the earliest work using of a systematic, extended series of names ending in -illion or -yllion.

The system in which the names million, billion, trillion, etc. refer to powers of one million is sometimes referred to as the Chuquet system.

Around 1550, Jacques Peletier du Mans took a system based on powers of 10⁶, and added the term "milliard" for 10⁹. This system was then used in England and Germany and part of the rest of Europe. This system is sometimes referred to as the Chuquet-Peletier system.

Much later, in France and in the USA, a different short scale system became established where the term billion signifies 10⁹. Last century, England and other English-speaking countries joined the USA and other countries in using the short scale system; whereas, France rejoined Germany, most of Europe, and much of the world in the Chuquet-Peletier, or long scale, system.

What is undeniable is that Chuquet was the author of the earliest system (published in the works Larismetique (1520) by Estienne de la Roche without attribution and Triparty en la science des nombres (written before 1488 but only published 1870) by Nicolas Chuquet) for names of large numbers by combining Latin-derived prefixes with the suffix -illion.

"... Item lon doit savoir que ung million vault mille milliers de unitez, et ung byllion vault mille milliers de millions, et [ung] tryllion vault mille milliers de byllions, et ung quadrillion vault mille milliers de tryllions et ainsi des aultres : Et de ce en est pose ung exemple nombre divise et punctoye ainsi que devant est dit, tout lequel nombre monte 745324 tryllions 804300 byllions 700023 millions 654321. Exemple : 745324'8043000'700023'654321 ..."

Item: one should know that a million is worth a thousand thousand units, and a byllion is worth a thousand thousand millions, and tryillion is worth a thousand thousand byllions, and a quadrillion is worth a thousand thousand tryllions, and so on for the others. And an example of this follows, a number divided up and punctuated as previously described, the whole number being seven hundred forty-five thousand three hundred and twenty-four tryllions, 804300 byllions 700023 millions 654321 ...

Short scale  comparison	Chuquet	Peletier	Systematics	Base 10	SI Prefix
unit	unit	unit	Million 0	10  0	(none)
thousand	thousand	thousand	Million 0.5	10  3	k (kilo)
Million	Million	Million	Million 1	10  6	M (mega)
Billion	thousand million	Milliard	Million 1.5	10  9	G (giga)
Trillion	Billion	Billion	Million 2	10 12	T (tera)
Quadrillion	thousand billion	Billiard	Million 2.5	10 15	P (peta)
Quintillion	Trillion	Trillion	Million 3	10 18	E (exa)
Sextillion	thousand trillion	Trilliard	Million 3.5	10 21	Z (zetta)
Septillion	Quadrillion	Quadrillion	Million 4	10 24	Y (yotta)

See also

• English-language numerals
• Jacques Peletier du Mans
• List of numbers
• Long and short scales
• Names of large numbers
• Zillion

References

• O'Connor, John J.; Robertson, Edmund F., "Etymology of some common mathematical terms", MacTutor History of Mathematics archive, University of St Andrews, http://www-history.mcs.st-andrews.ac.uk/Miscellaneous/Mathematical_notation.html .

Persondata
Name	Chuquet, Nicolas
Alternative names
Short description	Mathematician
Date of birth	1445
Place of birth	Paris, France
Date of death	1488
Place of death	Lyon, France