Fatto generale: 313 is the number of Muslims who fought in the Battle of Badr against Muhammad's, and by extension, Islam's, foes.
Fatto matematico: 313 is the number of intersections when all the diagonals of a regular dodecagon are drawn.
Trivia: 313 is the number of Muslims who fought in the Battle of Badr against Muhammad's, and by extension, Islam's, foes.
Data storica: November 8th is the day in 1965 that the Murder (Abolition of Death Penalty) Act 1965 is given Royal Assent, formally abolishing the death penalty in the United Kingdom.