Love never ends. As for prophecies, they will pass away; as for tongues, they will cease; as for knowledge, it will pass away. For we know in part and we prophesy in part, but when the perfect comes, the partial will pass away. - 1 Corinthians 13:8-10
Math
A positive integer is perfect if it equals the sum of its factors, excluding the number itself.
(FP101x)