This list compares various sizes of positive numbers A number is a mathematical object used in counting and measuring. A notational symbol which represents a number is called a numeral, but in common usage the word number is used for both the abstract object and the symbol, as well as for the word for the number. In addition to their use in counting and measuring, numerals are often used for labels ,, including counts of things, dimensionless quantity In dimensional analysis, a dimensionless quantity is a quantity without a physical unit and is thus a pure number. Such a number is typically defined as a product or ratio of quantities that might have units individually, but these cancel out in the combination and probabilities Probability is a way of expressing knowledge or belief that an event will occur or has occurred. The concept has been given an exact mathematical meaning in probability theory, which is used extensively in such areas of study as mathematics, statistics, finance, gambling, science, and philosophy to draw conclusions about the likelihood of. Each number is given a name in the so called short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale which is used in English speaking countries, as well as a name in the long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale which is used in a series of countries that do not have English as their national language.
Smaller than 10−30
- Computing: The number 5 × 10−324 is approximately equal to the smallest positive non-zero value that can be represented by a double-precision IEEE floating-point The IEEE Standard for Floating-Point Arithmetic is the most widely-used standard for floating-point computation, and is followed by many hardware (CPU and FPU) and software implementations. Many computer languages allow or require that some or all arithmetic be carried out using IEEE 754 formats and operations. The current version is IEEE 754-2008, value.
- Computing: The number 1.4 × 10−45 is approximately equal to the smallest positive non-zero value that can be represented by a single-precision IEEE floating-point The IEEE Standard for Floating-Point Arithmetic is the most widely-used standard for floating-point computation, and is followed by many hardware (CPU and FPU) and software implementations. Many computer languages allow or require that some or all arithmetic be carried out using IEEE 754 formats and operations. The current version is IEEE 754-2008, value.
10−30
(0.000000000000000000000000000001; 1000−10; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one nonillionth, long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one quintillionth)
- Mathematics: The probability in a game of bridge Contract bridge, usually known simply as bridge, is a trick-taking card game of skill and chance . It is played by four players who form two partnerships; the partners sit opposite each other at a table. The game consists of the auction (often called bidding) and play, after which the hand is scored of all four players getting a single-suit hand is approximately 4.47×10−28[1]
10−27
(0.000000000000000000000000001; 1000−9; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one octillionth, long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one quadrilliardth)
10−24
(0.000000000000000000000001; 1000−8; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one septillionth long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one quadrillionth)
ISO: yocto- (y)
10−21
(0.000000000000000000001; 1000−7; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one sextillionth, long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one trilliardth)
ISO: zepto- Zepto- is a prefix in the metric system denoting a factor of 10−21 or 0.000000000000000000001 (z)
10−18
(0.000000000000000001; 1000−6; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one quintillionth, long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one trillionth)
ISO: atto- Atto- is a prefix in the metric system denoting a factor of 10−18 or 0.000000000000000001 (a)
- Mathematics: The probability of rolling snake eyes Snake Eyes is a fictional character from G.I. Joe: A Real American Hero, a line of military-themed toys created by Hasbro. The character is one of the original members of the fictional team and toy line. He is a major character in the G.I. Joe: A Real American Hero comic book series and animated series. He has also appeared in G.I. Joe: Sigma 6, 10 times in a row on a pair of fair dice is about 2.74×10−16
10−15
(0.000000000000001; 1000−5; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one quadrillionth, long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one billiardth)
10−12
(0.000000000001; 1000−4; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one trillionth, long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one billionth)
- Mathematics: The probability in a game of bridge Contract bridge, usually known simply as bridge, is a trick-taking card game of skill and chance . It is played by four players who form two partnerships; the partners sit opposite each other at a table. The game consists of the auction (often called bidding) and play, after which the hand is scored of one player getting a single-suit hand is approximately 2.52×10−11 (0.00000000252%)
10−9
(0.000000001; 1000−3; short scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one billionth; long scale There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one milliardth)
- Mathematics — Lottery: The odds of winning the Grand Prize (matching all 6 numbers) in the US Powerball Powerball is an American lottery game sold through U.S. lotteries as a shared jackpot pool game. It is coordinated by the Multi-State Lottery Association , a non-profit association formed by an agreement with member lotteries. Powerball currently is available in 31 states, the District of Columbia, and the U.S. Virgin Islands lottery, with a single ticket, under the rules as of August 2009[update], are 195,249,053 to 1 against, for a probability of 5.12×10−9 (0.000000512%).
- Mathematics — Lottery: The odds of winning the Jackpot (matching the 6 main numbers) in the UK National Lottery The National Lottery is the largest lottery in the United Kingdom. It is operated by Camelot Group, to whom the licence was granted in 1994, 2001 and again in 2007. The lottery is regulated by The National Lottery Commission. The National Lottery undertook a major rebranding programme in 2002 designed to combat falling sales. This resulted in the, with a single ticket, under the rules as of August 2009[update], are 13,983,815 to 1 against, for a probability of 7.15×10−8 (0.00000715%).
10−6
(0.000001; 1000−2; long and short scales There are other numbering systems which are neither long nor short scale such as the Chinese numbering system, the Indian numbering system, the Japanese numbering system, and the Korean numbering system. Many countries, including most in continental Europe, use the long scale: one millionth)
- Mathematics - Poker Poker is a family of card games that share betting rules and usually hand rankings. Poker games differ in how the cards are dealt, how hands may be formed, whether the high or low hand wins the pot in a showdown (in some games, the pot is split between the high and low hands), limits on bets and how many rounds of betting are allowed. In most: The odds of being dealt a royal flush in poker are 649,739 to 1 against, for a probability of 1.5 × 10−6 (0.00015%).
- Mathematics — Poker: The odds of being dealt a straight flush (other than a royal flush) in poker are 72,192 to 1 against, for a probability of 1.4 × 10−5 (0.0014%).
- Mathematics — Poker: The odds of being dealt a four of a kind in poker are 4,164 to 1 against, for a probability of 2.4 × 10−4 (0.024%).
10−3
- Mathematics — Poker: The odds of being dealt a full house in poker are 693 to 1 against, for a probability of 1.4 × 10−3 (0.14%).
- Mathematics — Poker: The odds of being dealt a flush in poker are 507.8 to 1 against, for a probability of 1.9 × 10−3 (0.19%).
- Mathematics — Poker: The odds of being dealt a straight in poker are 253.8 to 1 against, for a probability of 4 × 10−3 (0.39%).
- Physics: α = 0.007297352570(5), the fine-structure constant In physics, the fine-structure constant is a fundamental physical constant, namely the coupling constant characterizing the strength of the electromagnetic interaction. The numerical value of α is the same in all systems of units, because α is a dimensionless quantity.
10−2
(0.01; one hundredth)
ISO: centi- (c)
- BioMed — HIV: About 1.2% of all 15–49 year-old humans were infected with HIV Human immunodeficiency virus is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (AIDS), a condition in humans in which the immune system begins to fail, leading to life-threatening opportunistic infections. Infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or at the end of 2001[update][citation needed]
- Mathematics — Lottery: The odds of winning any prize in the UK National Lottery A lottery is a form of gambling which involves the drawing of lots for a prize. The word stems from the Dutch word loterij, which is derived from the noun lot meaning fate or destiny, with a single ticket, under the rules as of 2003, are 54 to 1 against, for a probability of about 0.018 (1.8%)
- Mathematics — Poker: The odds of being dealt a three of a kind in poker are 46 to 1 against, for a probability of 0.021 (2.1%)
- Mathematics — Lottery: The odds of winning any prize in the US Powerball Multistate Lottery, with a single ticket, under the rules as of 2006, are 36.61 to 1 against, for a probability of 0.027 (2.7%)
- Mathematics — Poker: The odds of being dealt two pair in poker are 20 to 1 against, for a probability of 0.048 (4.8%).
10−1
(0.1; one tenth)
- Mathematics — Poker: The odds of being dealt only one pair in poker are about 5 to 2 against (2.37 to 1), for a probability of 0.42 (42%).
- Mathematics — Poker: The odds of being dealt no pair in poker are nearly 1 to 2, for a probability of about 0.5 (50%)
100
- Mathematics: √2 The square root of 2, also known as Pythagoras' constant, is the positive real number that, when multiplied by itself, gives the number 2 ≈ 1.414213562373095, the ratio of the diagonal A diagonal is a line joining two nonconsecutive vertices of a polygon or polyhedron. Informally, any sloping line is called diagonal. The word "diagonal" derives from the Greek διαγώνιος , from dia- ("through", "across") and gonia ("angle", related to gony "knee"); it was used by both of a square In geometry, a square is a regular quadrilateral. This means that it has four equal sides and four equal angles . A square with vertices ABCD would be denoted ABCD to its side length.
- Mathematics: φ ≈ 1.618033988749895, the golden ratio In mathematics and the arts, two quantities are in the golden ratio if the ratio of the sum of the quantities to the larger quantity is equal to the ratio of the larger quantity to the smaller one. The golden ratio is an irrational mathematical constant, approximately 1.6180339887. Other names frequently used for the golden ratio are the golden
- Mathematics: the number system understood by most computers, the binary The binary numeral system, or base-2 number system, represents numeric values using two symbols, 0 and 1. More specifically, the usual base-2 system is a positional notation with a radix of 2. Owing to its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used internally by all modern computers system, uses 2 digits: 0 and 1.
- Mathematics: e The mathematical constant e is the unique real number such that the value of the derivative of the function f(x) = ex at the point x = 0 is equal to 1. The function ex so defined is called the exponential function, and its inverse is the natural logarithm, or logarithm to base e. The number e is also commonly defined as the base of the natural ≈ 2.718281828459045, the base of the natural logarithm The natural logarithm is the logarithm to the base e, where e is an irrational constant approximately equal to 2.718281828. The natural logarithm is generally written as ln, loge(x) or sometimes, if the base of e is implicit, as simply log(x)
- Mathematics: π ≈ 3.141592653589793, the ratio of a circle's circumference to its diameter
- BioMed: 7 ± 2, in cognitive science, George A. Miller's estimate of the number of objects that can be simultaneously held in working memory
- Astronomy: 8 planets in the Solar System
101
(10; ten)
ISO: deca- (da)
- Human scale: there are 10 fingers on a pair of human hands, and 10 toes on a pair of human feet.
- Mathematics: the number system used in everyday life, the decimal system, has 10 digits: 0,1,2,3,4,5,6,7,8,9.
- Mathematics: the hexadecimal system, a common number system used in computer programming, uses 16 digits where the last 6 are usually represented by letters: 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F.
- Language: there are 26 letters in the Latin alphabet in the English language.
102
(100; hundred)
ISO: hecto- (h)
- Computing: There are 128 characters in the ASCII character set.
- Political Science: There were 192 member states of the United Nations as of 2006.
103
(1000; thousand)
ISO: kilo- (k)
- Language: 2,000–3,000 letters on a typical typed page of text.
- BioMed: the DNA of the simplest viruses has some 5,000 base pairs.
- Language: There are about 6,500 mutually unintelligible languages and dialects.[citation needed]
104
(10000; ten thousand or a myriad)
- BioMed: Each neuron in the human brain is estimated to connect to 10,000 others
- Language: There are 20,000–40,000 distinct Chinese characters, depending on how one counts them
- BioMed: Each human being is estimated to have 30,000 to 40,000 genes
- Records: As of July 2004[update], the largest number of decimal places of π that have been recited from memory - > 42000
- Mathematics: 65,537 is the largest known Fermat prime
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Mon, 02 Aug 2010 20:11:27 GMT+00:00
MarketWatch (press release) On June 22, 2010 the Company announced the sale of 1000 shares of common stock at $3.61 per share for estimated proceeds, less the underwriters' ...
Thu, 03 Sep 2009 16:49:31 PDT
Correction from a very good friend (edited to fit) "1000 1000 (mil) 1000 (bil) 1000 (tril). There's economic talk in ... youtube.com.
shiren_Bod
Mon, 30 Aug 2010 13:10:00 GM
They like to find and solve some interesting . number. theory problems together. One day, they become interested in some special . numbers. , which can be expressed as powers of smaller . numbers. . For example, 9=3^2, 64=2^6, 1000=. 10. ^3 ...



