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The terms are doublets, which means they have entered the language through different routes but have the same etymological root, which is the Arabic "صفر" (which transliterates as "sifr"). Via Italian this became "zefiro" and thence "zero" in modern English, Portuguese, French, Catalan, Romanian and Italian ("cero" in Spanish).
Million Million Million M Mega-2 1 10 9: Billion Thousand million Milliard G Giga-3 2 10 12: Trillion Billion Billion T Tera-4 2 10 15: Quadrillion Thousand billion Billiard P Peta-5 3 10 18: Quintillion Trillion Trillion E Exa-6 3 10 21: Sextillion Thousand trillion Trilliard Z Zetta-7 4 10 24: Septillion Quadrillion Quadrillion Y Yotta-8 4 10 ...
The Indian numbering system is used in Indian English and the Indian subcontinent to express large numbers. Commonly used quantities include lakh (one hundred thousand) and crore (ten million) – written as 1,00,000 and 1,00,00,000 respectively in some locales. [1]
The root mil in million does not refer to the numeral, 1. The word, million, derives from the Old French, milion, from the earlier Old Italian, milione, an intensification of the Latin word, mille, a thousand. That is, a million is a big thousand, much as a great gross is a dozen gross or 12 × 144 = 1728. [7]
A googol is the large number 10 100 or ten to the power of one hundred. In decimal notation, it is written as the digit 1 followed by one hundred zeros: 10, 000, 000 ...
Later, French arithmeticians changed the words' meanings, adopting the short scale definition whereby three zeros rather than six were added at each step, so a billion came to denote a thousand million (10 9), a trillion became a million million (10 12), and so on. This new convention was adopted in the United States in the 19th century, but ...
the long scale — designates a system of numeric names formerly used in British English, but now obsolete, in which a billion is used for a million million (and similarly, with trillion, quadrillion etc., the prefix denoting the power of a million); and a thousand million is sometimes called a milliard. This system is still used in several ...
Previously in British English (but not in American English), the word "billion" referred exclusively to a million millions (1,000,000,000,000). However, this is not common anymore, and the word has been used to mean one thousand million (1,000,000,000) for several decades. [5]