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  2. 999 (number) - Wikipedia

    en.wikipedia.org/wiki/999_(number)

    999 (nine hundred [and] ninety-nine or nine-nine-nine) is a natural number following 998 and preceding 1000. It is the largest 3-digit decimal integer . Natural number

  3. Names of large numbers - Wikipedia

    en.wikipedia.org/wiki/Names_of_large_numbers

    In this way, numbers up to 10 3·999+3 = 10 3000 (short scale) or 10 6·999 = 10 5994 (long scale) may be named. The choice of roots and the concatenation procedure is that of the standard dictionary numbers if n is 9 or smaller. For larger n (between 10 and 999), prefixes can be constructed based on a system described by Conway and Guy. [17]

  4. History of large numbers - Wikipedia

    en.wikipedia.org/wiki/History_of_large_numbers

    The Ancient Greeks used a system based on the myriad, that is, ten thousand, and their largest named number was a myriad myriad, or one hundred million. In The Sand Reckoner , Archimedes (c. 287–212 BC) devised a system of naming large numbers reaching up to

  5. List of numbers - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/List_of_numbers

    A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.

  6. 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; 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.

  7. List of Dewey Decimal classes - Wikipedia

    en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

    119 Number and quantity; 120 Epistemology. ... 270 History of Christianity. 270 History, geographic treatment, biography of Christianity ... 999 Extraterrestrial ...

  8. 999 - Wikipedia

    en.wikipedia.org/wiki/999

    999 or triple nine most often refers to: 999 (emergency telephone number) , a telephone number for the emergency services in several countries 999 (number) , an integer

  9. 911 (emergency telephone number) - Wikipedia

    en.wikipedia.org/wiki/911_(emergency_telephone...

    The first use of a national emergency telephone number began in the United Kingdom in 1937 using the number 999, which continues to this day. [6] In the United States, the first 911 service was established by the Alabama Telephone Company and the first call was made in Haleyville, Alabama, in 1968 by Alabama Speaker of the House Rankin Fite and answered by U.S. Representative Tom Bevill.