313 (number)

In mathematics

• a prime number
• a twin prime with 311
• a centered square number
• a full reptend prime
• 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

  Religious significance

• 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".

  In popular culture

• 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.
• The sixth track of the album Get Some by Snot is called 313.
• The fifth track of the album Infinite by Eminem is called 313.