313 (number)
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| 313 | |
|---|---|
| Cardinal | Three hundred thirteen |
| Ordinal | 313th (Three hundred thirteenth) |
| Factorization | prime |
| Prime | twin, palindromic |
| Roman numeral | CCCXIII |
| Binary | 1001110012 |
| Octal | 4718 |
| Duodecimal | 22112 |
| Hexadecimal | 13916 |
313 is an integer following 312 and preceding 314. 313 is a:
- prime number
- twin prime with 311
- centered square number
- long prime
- pythagorean prime
- regular prime
- palindromic prime in both decimal and binary.
- truncatable prime
- happy number
- Armstrong number - in base 4 ( 3×42 + 1×41 + 3×40 = 33 + 13 + 33 )
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[edit] Religious significance
In Islam, 313 is the number of Muslims who fought in the Battle of Badr against Muhammad's, and by extension, Islam's, foes. It was a decisive Muslim victory against a force of over 1,000 other men: the Muslims lost only 14 men.
[edit] In popular culture
The number 313 is the U.S. telephone area code for the city of Detroit and nearby locales.[1]
Frame 313 of the Zapruder film shows the moment of impact for the bullet that killed President John F. Kennedy.[2]
[edit] See also
[edit] References
- ^ North American Numbering Plan Administration (2012). "NANPA Area Codes Map: Michigan". Nanpa.com. NeuStar. http://www.nanpa.com/area_code_maps/display.html?mi. Retrieved 19 February 2012.
- ^ Bugliosi, Vincent (2007). Reclaiming History: The Assassination of President John F. Kennedy. New York: W.W. Norton. p. 505. ISBN 978-0-393-04525-3.
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