Factor Calculator

Factors of 1139

The factors of 1139 are 1, 17, 67, and 1139. In total, 1139 has 4 factors. Its prime factorization is 17 × 67, and the sum of all its factors is 1224.

All factors of 1139

Here are all 4 factors of 1139, listed from smallest to largest.

117671139

Factor pairs of 1139

These 2 pairs of whole numbers each multiply to give 1139.

1 × 1139 = 1139
17 × 67 = 1139

Prime factorization of 1139

Dividing 1139 by the smallest prime at each step gives its prime factorization:

1139 ÷ 17 = 67
67 ÷ 67 = 1
Result: 1139 = 17 × 67 = 17 × 67

The distinct prime factors of 1139 are 17, 67. To factorize any other number, use the prime factorization calculator.

Factor tree of 1139

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

Factor tree of 113911391767
Prime factors are shown in solid indigo. Composite numbers split into their smallest prime and the quotient.

Properties of 1139

Number of factors4
Sum of factors1224
Sum of proper factors85
Prime factorization17 × 67
Prime or composite?Composite
Even or odd?Odd
Perfect square?No
Perfect cube?No
ClassificationDeficient

What makes 1139 interesting

  • 1139 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 2 different ways.
  • 1139 is a deficient number: its proper factors sum to 85, which is 1054 less than 1139 itself.

How to find the factors of 1139 yourself

Divide 1139 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 √1139 ≈ 33.75, because every factor above that pairs with one below it.

1139 ÷ 1 = 1139 ✓
1139 ÷ 17 = 67 ✓

Reading both columns gives every factor: 1, 17, 67, 1139. The factor calculator does this automatically for any number.

Numbers mathematically connected to 1139.

Frequently asked questions about 1139

What are the factors of 1139?

The factors of 1139 are 1, 17, 67, and 1139. That is 4 factors in total, counting both 1 and 1139.

Is 1139 a prime number?

No, 1139 is not prime — it is a composite number with 4 factors. A prime number has exactly two factors, but 1139 is also divisible by 17.

What is the prime factorization of 1139?

The prime factorization of 1139 is 17 × 67. Written out in full: 17 × 67 = 1139. Its distinct prime factors are 17, 67.

What two numbers multiply to give 1139?

There are 2 pairs of whole numbers that multiply to 1139: 1 × 1139, 17 × 67.

What is the sum of the factors of 1139?

Adding all the factors of 1139 together gives 1224. Excluding 1139 itself, the proper factors sum to 85.

Is 1139 a perfect square?

No, 1139 is not a perfect square. There is no whole number that multiplies by itself to give 1139. The nearest perfect squares are 1089 and 1156.

What is the largest factor of 1139 other than itself?

The largest factor of 1139 apart from 1139 itself is 67, since 1139 ÷ 67 = 17.

How many factors does 1139 have?

1139 has 4 factors: 1, 17, 67, and 1139. You can verify this from the prime factorization 17 × 67: add 1 to each exponent and multiply, giving 2 × 2 = 4.

Explore more

Try another number in the factor calculator, break 1139 down further with the prime factorization calculator, or compare 1139 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.