Is there a simpler way to calculate 13^7(mod 33 ) other than calculating the whole of 13^7 It would - Applied Mathematics - Number Theory

Question

Is there a simpler way to calculate 13^7(mod 33 ) other than
calculating the whole of 13^7? It would take a long time to do this
in the exam without a calculator so what is the shorter way of
solving this?

Manbar Singh · Accepted Answer

Is there a simpler way to calculate 13^7(mod 33 ) other than calculating the whole of 13^7? It would take a long time to do this in the exam without a calculator so what is the shorter way of solving this?