The Transliteration of the Bible into Greek characters was done by five men in the time of Ptolemos; that day was an evil day for Israel. The translation of the Bible was also carried out under King Ptolemos by 72 men shut up in separate cells; they introduced 18 changes which are all enumerated.
The Day the Torah Was Translated Into Greek
Gaster, Exempla of the Rabbis No. 61 (1924); Megillah 9a