So i have an upcoming exam, and since no calculators is allowed, i was wondering if there is an approach to calculating the value of 2 to the power of some value?
2^4,2^5, 2^12, 2^13.
I know a way is as such where:
2^4 = 2x2x2x2 = 16 2^5 = 2x2x2x2x2 = 32 2^12 = 2x2x2x2x2x2x2x2x2x2x2x2 = 4096
But it would definitely take a long time for power of 12 and 13, so is there any faster approach on solving these without calculator?