Answer
$5\times23$
Work Step by Step
A number is prime if it has only two factors: 1 and itself.
We know that the factors of 115 are 1, 5, 23, and 115.
5 is a prime number, so we can divide 115 by 5.
$115\div5=23$
23 is also a prime number.
Therefore, the prime factorization of 115 is $5\times23$.