'Seventeen' in the Bible

These are the generations of Jacob. Joseph, being seventeen years old, was feeding the flock with his brethren; and he was a lad with the sons of Bilhah, and with the sons of Zilpah, his father's wives: and Joseph brought the evil report of them unto their father.

And Jacob lived in the land of Egypt seventeen years: so the days of Jacob, the years of his life, were a hundred forty and seven years.