Exodus 12:4

Less. Moses does not specify the number. But in never comprised fewer than ten, nor more than twenty, in which number Menoch does not think women or children are comprised. The Jews satisfied the inquiry of Cestius, concerning the multitude which might be assembled at the paschal solemnity, by allowing ten for every victim; and finding that 250,600 victims had been sacrificed in the space of two hours, they concluded 2,700,000 people were collected at Jerusalem. (Josephus, Jewish Wars vii. 16.)