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  2. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    There are some examples of year numbers after 1000 written as two Roman numerals 1–99, e.g. 1613 as XVIXIII, corresponding to the common reading "sixteen thirteen" of such year numbers in English, or 1519 as X XIX as in French quinze-cent-dix-neuf (fifteen-hundred and nineteen), and similar readings in other languages. [37]

  3. 247 (number) - Wikipedia

    en.wikipedia.org/wiki/247_(number)

    247 (two hundred [and] forty-seven) is the natural number following 246 and preceding 248. Additionally, 247 is: a semiprime. a brilliant number (the product of two primes with the same number of digits). [1] a pentagonal number. [2] palindromic in base 18 (DD 18). a Harshad number in bases 10, 14, 19, 20, 27, 39, 40, 58, 77, 79, 115, 118, 229 ...

  4. 47 (number) - Wikipedia

    en.wikipedia.org/wiki/47_(number)

    47 (forty-seven) is the natural number following 46 and preceding 48. It is a prime number . It is the adopted favorite number of Pomona College , a liberal arts college in Southern California, whose alumni have added cultural references to it in numerous places, including many Star Trek episodes.

  5. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    The Latin numerals are the words used to denote numbers within the Latin language. They are essentially based on their Proto-Indo-European ancestors, and the Latin cardinal numbers are largely sustained in the Romance languages. In Antiquity and during the Middle Ages they were usually represented by Roman numerals in writing.

  6. 42 (number) - Wikipedia

    en.wikipedia.org/wiki/42_(number)

    42 is a pronic number, [1] an abundant number [2] as well as a highly abundant number, [3] a practical number, [4] an admirable number, [5] and a Catalan number. [6]The 42-sided tetracontadigon is the largest such regular polygon that can only tile a vertex alongside other regular polygons, without tiling the plane.

  7. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    The same suffix may be used with more than one category of number, as for example the orginary numbers secondary and tertiary and the distributive numbers binary and ternary. For the hundreds, there are competing forms: Those in -gent-, from the original Latin, and those in -cent-, derived from centi-, etc. plus the prefixes for 1 through 9 .

  8. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    As 100=10 2, these are two decimal digits. 121: Number expressible with two undecimal digits. 125: Number expressible with three quinary digits. 128: Using as 128=2 7. [clarification needed] 144: Number expressible with two duodecimal digits. 169: Number expressible with two tridecimal digits. 185

  9. Cardinal numeral - Wikipedia

    en.wikipedia.org/wiki/Cardinal_numeral

    Examples in English are the words one, two, three, and the compounds three hundred [and] forty-two and nine hundred [and] sixty. Cardinal numerals are classified as definite, and are related to ordinal numbers, such as the English first, second, third, etc. [1] [2] [3]