313 (number)

313 (three hundred [and] thirteen) is the natural number following 312 and preceding 314.

In mathematics
313 is:


 * the 65th prime number
 * a twin prime with 311
 * a centered square number
 * a full reptend prime (and the smallest number which is a full reptend prime in base 10 but not in base 2 to 9)
 * a Pythagorean prime
 * a regular prime
 * a palindromic prime in both decimal and binary.
 * a truncatable prime
 * a weakly prime in base 5
 * a happy number
 * an Armstrong number - in base 4 ( 3×42 + 1×41 + 3×40 = 33 + 13 + 33 )
 * an index of a prime Lucas number.

In religion

 * The number of soldiers that Muhammad had with him in the first battle fought by the Muslims, the Battle of Badr.
 * In Twelver Shia Islam, 313 is the number of soldiers or generals that will be in the army of the 12th "Imam of time" (Mahdi).

In other fields

 * The number 313 is the U.S. telephone area code for the city of Detroit and nearby locales.
 * Frame 313 of the Zapruder film shows the moment of impact for the bullet that killed President John F. Kennedy.
 * Donald Duck's car plate bears the number 313.
 * Flight 313 was a 2014 thriller movie about airline cover up.
 * The sixth track of the album Get Some (album) by Snot (band) is called 313.
 * The fifth track of the album Infinite (album) by Eminem is called 313.