614,656 = 28⁴
6 + 1 + 4 + 6 + 5 + 6 = 28

1,679,616 = 36⁴
1 + 6 + 7 + 9 + 6 + 1 + 6 = 36

8,303,765,625 = 45⁶
8 + 3 + 0 + 3 + 7 + 6 + 5 + 6 + 2 + 5 = 45

52,523,350,144 = 34⁷
5 + 2 + 5 + 2 + 3 + 3 + 5 + 0 + 1 + 4 + 4 = 34

20,047,612,231,936 = 46⁸
2 + 0 + 0 + 4 + 7 + 6 + 1 + 2 + 2 + 3 + 1 + 9 + 3 + 6 = 46