St Augustine defines perfect numbers in City of God ( Part XI , Chapter 30 ) in the early 5th century AD , repeating the claim that God created the world in 6 days .
6 is the smallest perfect number .
St Augustine defines perfect numbers in City of God ( Part XI , Chapter 30 ) in the early 5th century AD , repeating the claim that God created the world in 6 days because 6 is the smallest perfect number .