Who knows two hundred eighty-four?
?ארבעה ושמונים ומאתים - מי יודע
In the spirit of the song "Echad - mi yodeya", please post interesting and significant Jewish facts about the number 284.
I don't know if it's worth chasing after a lazy gematria for this one.
Check out mi-yodeya-series for the previous two hundred eighty-three entries in this ongoing series.
Please include sources for your information wherever possible, as with all other answers on this site.