Factors of 1143

3, 127. As a product: 3^2 × 127.

The factors of 1143 are 1, 3, 9, 127, 381, 1143. It has 6 factors.

Factors of 1143

Pick any whole number from 1 to 10,000.

1143 = 3^{2} \times 127

How to work it out

1
A factor of 1143 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1143 ≈ 33.81; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 6 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$1143 = 3^{2} \times 127$
4
Add all the factors: 1 + 3 + 9 + 127 + 381 + 1143 = 1664. Without 1143 itself that is 521, so 1143 is a deficient number.

LaTeX source of the formulas on this page

\[ 1143 = 3^{2} \times 127 \]

What are the factors of 1143?

The factors of 1143 are 1, 3, 9, 127, 381, 1143. It has 6 factors.

What are the prime factors of 1143?

3, 127. As a product: $3^{2}$ × 127.

How many factors does 1143 have?

1143 has 6 factors (3 factor pairs).

What is the sum of the factors of 1143?

1664.

Is 1143 a prime number?

No. It is divisible by 3, so 1143 = 3 × 381.