Answer
$11\times13$
Work Step by Step
A number is prime if it has only two factors: 1 and itself.
We know that the factors of 143 are 1, 11, 13, and 143.
11 is a prime number, so we can divide 143 by 11.
$143\div11=13$
13 is also a prime number.
Therefore, the prime factorization of 143 is $11\times13$.
