Factors of 153

All factors of 153

Here are all 6 factors of 153, listed from smallest to largest.

Factor pairs of 153

These 3 pairs of whole numbers each multiply to give 153.

Prime factorization of 153

Dividing 153 by the smallest prime at each step gives its prime factorization:

The distinct prime factors of 153 are 3, 17. To factorize any other number, use the prime factorization calculator.

Factor tree of 153

A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.

Properties of 153

What makes 153 interesting

• 153 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 3 different ways.
• 153 is a deficient number: its proper factors sum to 81, which is 72 less than 153 itself.
• 153 is a triangular number — it is the sum of the first 17 whole numbers (1 + 2 + … + 17 = 153).

How to find the factors of 153 yourself

Divide 153 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √153 ≈ 12.37, because every factor above that pairs with one below it.

Reading both columns gives every factor: 1, 3, 9, 17, 51, 153. The factor calculator does this automatically for any number.