Who knows three hundred forty seven?
שבעה 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 347? The more significant within Judaism and the more intrinsically dependent on the value 347, the stronger the answer. Please include sources for your information wherever possible, as with all other answers on this site.
No lazy Gematria please. But given that we’ve already had questions on 666 and 366, counting doesn’t seem to be this series’ strong suit anyway.