Factor Calculator

Factors of 139

The factors of 139 are 1 and 139. Since 139 is a prime number, it has exactly 2 factors and cannot be divided evenly by any other whole number. The sum of its factors is 140, and its prime factorization is simply 139 itself.

All factors of 139

Here are all 2 factors of 139, listed from smallest to largest.

1139

Factor pairs of 139

There is only one factor pair for 139, because it is prime.

1 × 139 = 139

Prime factorization of 139

139 is a prime number, so it cannot be broken down further. Its prime factorization is simply 139.

Properties of 139

Number of factors2
Sum of factors140
Sum of proper factors1
Prime factorization139
Prime or composite?Prime
Even or odd?Odd
Perfect square?No
Perfect cube?No
ClassificationDeficient

What makes 139 interesting

  • 139 is a prime number, so its only factors are 1 and 139. It cannot be split into a product of two smaller whole numbers.
  • Every prime number is deficient — the sum of its proper factors is always 1, which is far less than the number itself.

How to find the factors of 139 yourself

Divide 139 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 √139 ≈ 11.79, because every factor above that pairs with one below it.

139 ÷ 1 = 139 ✓

Reading both columns gives every factor: 1, 139. The factor calculator does this automatically for any number.

Numbers mathematically connected to 139.

Frequently asked questions about 139

What are the factors of 139?

The factors of 139 are 1 and 139. That is 2 factors in total, counting both 1 and 139.

Is 139 a prime number?

Yes, 139 is a prime number. It has exactly two factors: 1 and 139. No other whole number divides it evenly.

What is the prime factorization of 139?

139 is already prime, so its prime factorization is simply 139. It cannot be broken down any further.

What two numbers multiply to give 139?

There is 1 pair of whole numbers that multiply to 139: 1 × 139.

What is the sum of the factors of 139?

Adding all the factors of 139 together gives 140. Excluding 139 itself, the proper factors sum to 1.

Is 139 a perfect square?

No, 139 is not a perfect square. There is no whole number that multiplies by itself to give 139. The nearest perfect squares are 121 and 144.

What is the largest factor of 139 other than itself?

The largest factor of 139 apart from 139 itself is 1, since 139 ÷ 1 = 139.

How many factors does 139 have?

139 has 2 factors: 1 and 139.

Explore more

Try another number in the factor calculator, break 139 down further with the prime factorization calculator, or compare 139 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.