 Power of two

In this positive integer context, a power of two is $2^k$ for a nonnegative integer $k$, giving $1,2,4,8,\dots$. Allowing negative or real exponents gives a broader meaning of exponentiation, which is not intended in the integer divisibility criteria here.

The term "power of two" refers to numbers that can be expressed in the form \(2^n\), where \(n\) is an integer. In other words, a power of two is a value obtained by multiplying the number two by itself \(n\) times.