Factors of 143

The factors of 143 are 1, 11, 13, 143. It has 4 factors.

Factors of 143

Pick any whole number from 1 to 10,000.

143 = 11 \times 13

How to work it out

1
A factor of 143 is a whole number that divides it with nothing left over. You only need to test the numbers up to √143 ≈ 11.96; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 4 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$143 = 11 \times 13$
4
Add all the factors: 1 + 11 + 13 + 143 = 168. Without 143 itself that is 25, so 143 is a deficient number.

LaTeX source of the formulas on this page

\[ 143 = 11 \times 13 \]

Factor	Pairs with	Product
1	143	1 × 143 = 143
11	13	11 × 13 = 143

What are the factors of 143?

The factors of 143 are 1, 11, 13, 143. It has 4 factors.

What are the prime factors of 143?

11, 13. As a product: 11 × 13.

How many factors does 143 have?

143 has 4 factors (2 factor pairs).

What is the sum of the factors of 143?

168.

Is 143 a prime number?

No. It is divisible by 11, so 143 = 11 × 13.