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  2. Names of large numbers - Wikipedia

    en.wikipedia.org/wiki/Names_of_large_numbers

    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 27 ...

  3. Long and short scales - Wikipedia

    en.wikipedia.org/wiki/Long_and_short_scales

    Combinations of the unambiguous words such as ten, hundred, thousand and million. For example: one thousand million and one million million. [5] Scientific notation (for example 1 × 10 10), or its engineering notation variant (for example 10 × 10 9), or the computing variant E notation (for example 1e10). This is the most common practice ...

  4. Large numbers - Wikipedia

    en.wikipedia.org/wiki/Large_numbers

    The number of neuronal connections in the human brain (estimated at 10 14), or 100 trillion/100 T The Avogadro constant is the number of "elementary entities" (usually atoms or molecules) in one mole ; the number of atoms in 12 grams of carbon-12 – approximately 6.022 × 10 23 , or 602.2 sextillion/60.2Sx.

  5. Trillion - Wikipedia

    en.wikipedia.org/wiki/Trillion

    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.

  6. English numerals - Wikipedia

    en.wikipedia.org/wiki/English_numerals

    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 ...

  7. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    The siriometer is an obsolete astronomical measure equal to one million astronomical units, i.e., one million times the average distance between the Sun and Earth. [13] This distance is equal to about 15.8 light-years , 149.6 Pm , or 4.8 parsecs , and is about twice the distance from Earth to the star Sirius .

  8. Scientific calculator - Wikipedia

    en.wikipedia.org/wiki/Scientific_calculator

    TI's long-running TI-30 series being one of the most widely used scientific calculators in classrooms. Casio, Canon, and Sharp, produced their graphing calculators, with Casio's FX series (beginning with the Casio FX-1 in 1972 [9]). Casio was the first company to produce a Graphing calculator (Casio fx-7000G).

  9. Orders of magnitude (numbers) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(numbers)

    Genocide/Famine: 55 million is an estimated upper bound for the death toll of the Great Chinese Famine. Literature: Wikipedia contains a total of around 64 million articles in 354 languages as of February 2025. War: 70 to 85 million casualties estimated as a result of World War II. Mathematics: 73,939,133 is the largest right-truncatable prime.