My co-ordinates (these are obviously not exact):

- <Largest number that is the sum of the digits of its cube>.7150,
- <Largest n for which 1^2+2^2+3^2+ ... +n^2 = 1+2+3+ ... +m has a solution>.3183

My co-ordinates (these are obviously not exact):

- <Largest number that is the sum of the digits of its cube>.7150,
- <Largest n for which 1^2+2^2+3^2+ ... +n^2 = 1+2+3+ ... +m has a solution>.3183