Wednesday, 2011-10-26

119: Digit power sum

Investigating the numbers which are equal to sum of their digits raised to some power.

I turned this over in my mind trying to find some limit so I didn’t have such an enormous search space. Then I found A023106 in Sloane which gives all but the last few terms, and then it was really fast to brute force.

To be quite honest this was a bit easy for this level.