##Who knows three hundred thirteen?
##?שלושה עשר ושלוש מאות - מי יודע 

In the spirit of the song ["Echad - mi yodeya"](http://en.wikipedia.org/wiki/Echad_Mi_Yodea), please post interesting and significant Jewish facts about the number 313.

Lazy gematria doesn't come close to real achievment.

Check out [tag:mi-yodeya-series] for the previous three hundred twelve entries in this ongoing series.

Please include sources for your information wherever possible, as with all other answers on this site.