Basic College Mathematics (10th Edition)

$2^{3}$
In order to find the prime factorization of 8, we can try to divide 8 by the first prime, 2. $8\div2=4$ Try to divide 4 by 2. $4\div2=2$ 2 itself is a prime number, so we cannot simplify any more. The prime factorization of 8 is $2\times2\times2=2^{3}$.