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  2. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The Roman numerals, in particular, are directly derived from the Etruscan number symbols: šŒ  , šŒ” , šŒ¢ , šŒ£ , and šŒŸ for 1, 5, 10, 50, and 100 (they had more symbols for larger numbers, but it is unknown which symbol represents which number). As in the basic Roman system, the Etruscans wrote the symbols that added to the desired ...

  3. 100 - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/100

    Year 100 was a leap year starting on Wednesday of the Julian calendar. The denomination 100 for this year has been used since the early medieval period.

  4. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    A form of unary notation called Church encoding is used to represent numbers within lambda calculus. Some email spam filters tag messages with a number of asterisks in an e-mail header such as X-Spam-Bar or X-SPAM-LEVEL. The larger the number, the more likely the email is considered spam. 10: Bijective base-10: To avoid zero: 26: Bijective base-26

  5. Alphabetic numeral system - Wikipedia

    en.wikipedia.org/wiki/Alphabetic_numeral_system

    Roman numerals and Attic numerals, both of which were also alphabetic numeral systems, became more concise over time, ... 100: 200: 300: 400: 500: 600: 700: 800: 900 ...

  6. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    Numbers may either precede or follow their noun (see Latin word order). Most numbers are invariable and do not change their endings: regnāvit Ancus annōs quattuor et vīgintī (Livy) [1] 'Ancus reigned for 24 years' However, the numbers 1, 2, 3, and 200, 300, etc. change their endings for gender and grammatical case.

  7. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    The multiple category are adverbial numbers, like the English once, ... (100 years), or bicentennial (200 years). They occur in constructed words such as systematic ...

  8. 266 (number) - Wikipedia

    en.wikipedia.org/wiki/266_(number)

    266 is an even composite number with three prime factors. [1] 266 is a repdigit in base 11. In base 11, 266 is 222. 266 is a sphenic number being the product of 3 prime numbers. [2] 266 is a nontotient number which is an even number not in Euler’s totient function. [3] 266 is an inconsummate number. [4]

  9. 200 (number) - Wikipedia

    en.wikipedia.org/wiki/200_(number)

    The number appears in the Padovan sequence, preceded by 86, 114, 151 (it is the sum of the first two of these). [1] The sum of Euler's totient function φ(x) over the first twenty-five integers is 200. 200 is the smallest base 10 unprimeable number – it cannot be turned into a prime number by changing just one of its digits to any other digit.