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Traditional American usage (which was also adapted from French usage but at a later date), Canadian, and modern British usage assign new names for each power of one thousand (the short scale). Thus, a billion is 1000 × 1000 2 = 10 9; a trillion is 1000 × 1000 3 = 10 12; and so forth.
Thus, in France and Italy, some scientists then began using billion to mean 10 9, trillion to mean 10 12, etc. [28] This usage formed the origins of the later short scale. The majority of scientists either continued to say thousand million or changed the meaning of the Pelletier term, milliard, from "million of millions" down to "thousand ...
For example "billion" may be easier to comprehend for some readers than "1,000,000,000". But, as names, a numeric value can be lengthy. For example, "2,345,789" is "two million, three hundred forty five thousand, seven hundred and eighty nine".
100 000 000 000; short scale: one hundred billion; long scale: hundred thousand million, or hundred milliard) Astronomy: There are 100 billion planets located in the Milky Way. [30] [31] Biology – Neurons in the brain: approximately (1±0.2) × 10 11 neurons in the human brain. [32]
This informal postfix is read or spoken as "thousand", "grand", or just "k". The financial and general news media mostly use m or M, b or B, and t or T as abbreviations for million, billion (10 9) and trillion (10 12), respectively, for large quantities, typically currency [28] and population. [29]
hundred hecto- (h) 100 10 2: 2 thousand kilo- (k) 1000: 10 3: 3 million mega- (M) 1 000 000: 10 6: 6 billion giga- (G) 1 000 000 000: 10 9: 9 trillion tera- (T) 1 000 000 000 000: 10 12: 12 quadrillion peta- (P) 1 000 000 000 000 000: 10 15: 15 quintillion exa- (E) 1 000 000 000 000 000 000: 10 18: 18 sextillion zetta- (Z) 1 000 000 000 000 000 ...
Visualization of 1 trillion (short scale) A Rubik's cube, which has about 43 trillion (long scale) possible positions. Trillion is a number with two distinct definitions: 1,000,000,000,000, i.e. one million million, or 10 12 (ten to the twelfth power), as defined on the short scale. This is now the meaning in both American and British English.
1000 million Mark Notgeld banknote (1923) of Frankfurt am Main. According to the Oxford English Dictionary, the word billion was formed in the 16th century (from million and the prefix bi-, "two"), meaning the second power of a million (1,000,000 2 = 10 12). This long scale definition was similarly applied to trillion, quadrillion and so on ...