- #1
ehrenfest
- 2,020
- 1
Homework Statement
http://math.stanford.edu/~vakil/putnam07/07putnam2.pdf
I am working on number 2.
So I want to find 2^70 + 3^70 mod 13.
I can use Fermat's Little Theorem to reduce the exponent to 10, but I do not know what to do next...