Who knows three hundred forty five?
חמישה וארבעים ושלוש מאות - מי יודע?
The traditional Passover song "Echad - mi yodeya" implies a possible presupposition that there is a Jewish significance to be found for each natural number. Accordingly, there is an ongoing series on Mi Yodeya that is attempting to unearth significant Judaism facts about each number, in sequence.
What significant Judaism facts are there about the number 345? The more significant within Judaism and the more intrinsically dependent on the value 345, the stronger the answer. Please include sources for your information wherever possible, as with all other answers on this site.
The name of the guy who posted this question is Moses, and the question - it's name is Mi Yodeya. The answers can be named whatever you want, but make sure that they are not just about lazy gematria.