Q: What is the prime factorization of the number 715,367?

 A:
  • The prime factors are: 109 x 6,563
    • or also written as { 109, 6,563 }
  • Written in exponential form: 1091 x 6,5631

Why is the prime factorization of 715,367 written as 1091 x 6,5631?

What is prime factorization?

Prime factorization or prime factor decomposition is the process of finding which prime numbers can be multiplied together to make the original number.

Finding the prime factors of 715,367

To find the prime factors, you start by dividing the number by the first prime number, which is 2. If there is not a remainder, meaning you can divide evenly, then 2 is a factor of the number. Continue dividing by 2 until you cannot divide evenly anymore. Write down how many 2's you were able to divide by evenly. Now try dividing by the next prime factor, which is 3. The goal is to get to a quotient of 1.

If it doesn't make sense yet, let's try it...

Here are the first several prime factors: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29...

Let's start by dividing 715,367 by 2

715,367 ÷ 2 = 357,683.5 - This has a remainder. Let's try another prime number.
715,367 ÷ 3 = 238,455.6667 - This has a remainder. Let's try another prime number.
715,367 ÷ 5 = 143,073.4 - This has a remainder. Let's try another prime number.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
715,367 ÷ 109 = 6,563 - No remainder! 109 is one of the factors!
6,563 ÷ 109 = 60.211 - There is a remainder. We can't divide by 109 evenly anymore. Let's try the next prime number
6,563 ÷ 113 = 58.0796 - This has a remainder. 113 is not a factor.
6,563 ÷ 127 = 51.6772 - This has a remainder. 127 is not a factor.
6,563 ÷ 131 = 50.0992 - This has a remainder. 131 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
6,563 ÷ 6,563 = 1 - No remainder! 6,563 is one of the factors!

The orange divisor(s) above are the prime factors of the number 715,367. If we put all of it together we have the factors 109 x 6,563 = 715,367. It can also be written in exponential form as 1091 x 6,5631.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 715,367.

715,367
Factor Arrows
1096,563

More Prime Factorization Examples

715,365715,366715,368715,369
33 x 51 x 71 x 757121 x 357,683123 x 31 x 411 x 7271191 x 231 x 1,6371

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