Determine all possible positive base ten repdigit(s)
N, such that the sum of the digits of N2
is equal to 37.
(In reply to computer solution
A minor problem with the solution method. n^2 could have more than 37 digits, if some of them are zero. Most of the non-zero ones would need to be 1, so this isn't a practical objection, but I think the program should check for repunits with more than 19 digits, just in case.