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1 solution
There is a divisibility test for any number that would be the answer for 2^x. If x= a whole number, then the answer will be divisible if the last x digits are multiple of the answer. For instance, the divisibility test for 2 is if the last 1 digit is a multiple of 2, or is not mathematically possible to prove if it is not, like 0 (2^1=2). 12 is a multiple of 2 because the last digit, 2, is a multiple of 2. Then the divisibility test for 4 is if the last 2 digits are a multiple of 4 (2^2=4). 296 is a multiple of 4 because 96 is.