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Billion is a word for a large number, and it has two distinct definitions: 1,000,000,000, i.e. one thousand million, or 10 9 (ten to the ninth power), as defined on the short scale. This is now the most common sense of the word in all varieties of English; it has long been established in American English and has since become common in Britain ...
Extensions of the standard dictionary numbers. This section illustrates several systems for naming large numbers, and shows how they can be extended past vigintillion. Traditional British usage assigned new names for each power of one million (the long scale): 1,000,000 = 1 million; 1,000,0002 = 1 billion; 1,000,0003 = 1 trillion; and so on.
1,000,000,000(one billion, short scale; one thousand million or one milliard, one yard,[1]long scale) is the natural numberfollowing 999,999,999and preceding 1,000,000,001. With a number, "billion" can be abbreviated as b, bil[citation needed]or bn. [2][3] In standard form, it is written as 1 × 109. The metric prefixgigaindicates 1,000,000,000 ...
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 ...
Visualisation of powers of 10 from one to 1 trillion. A power of 10 is any of the integer powers of the number ten; in other words, ten multiplied by itself a certain number of times (when the power is a positive integer). By definition, the number one is a power (the zeroth power) of ten. The first few non-negative powers of ten are:
For instance, according to the prevailing Big Bang model, our universe is approximately 13.8 billion years old (equivalent to 4.355 × 10^17 seconds). The observable universe spans an incredible 93 billion light years (approximately 8.8 × 10^26 meters) and hosts around 5 × 10^22 stars, organized into roughly 125 billion galaxies (as observed ...
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. [28] [29] Biology – Neurons in the brain: approximately (1±0.2) × 10 11 neurons in the human brain. [30]
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]