For how many positive values of the integer
k is the above true?
What would be your answer if the number
2016 was replaced by 2015 in all 2016's appearances?
(In reply to re: Paper and Pencil solution, part (a) / part (b)
That matches my calculation, Jer, but you have a cut-and-paste error in your solution
of course, it should say it should say 31^(67*2015)