Q: What is the prime factorization of the number 8,323,102?

 A:
  • The prime factors are: 2 x 19 x 23 x 89 x 107
    • or also written as { 2, 19, 23, 89, 107 }
  • Written in exponential form: 21 x 191 x 231 x 891 x 1071

Why is the prime factorization of 8,323,102 written as 21 x 191 x 231 x 891 x 1071?

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 8,323,102

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 8,323,102 by 2

8,323,102 ÷ 2 = 4,161,551 - No remainder! 2 is one of the factors!
4,161,551 ÷ 2 = 2,080,775.5 - There is a remainder. We can't divide by 2 evenly anymore. Let's try the next prime number
4,161,551 ÷ 3 = 1,387,183.6667 - This has a remainder. 3 is not a factor.
4,161,551 ÷ 5 = 832,310.2 - This has a remainder. 5 is not a factor.
4,161,551 ÷ 7 = 594,507.2857 - This has a remainder. 7 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
4,161,551 ÷ 19 = 219,029 - No remainder! 19 is one of the factors!
219,029 ÷ 19 = 11,527.8421 - There is a remainder. We can't divide by 19 evenly anymore. Let's try the next prime number
219,029 ÷ 23 = 9,523 - No remainder! 23 is one of the factors!
9,523 ÷ 23 = 414.0435 - There is a remainder. We can't divide by 23 evenly anymore. Let's try the next prime number
9,523 ÷ 29 = 328.3793 - This has a remainder. 29 is not a factor.
9,523 ÷ 31 = 307.1935 - This has a remainder. 31 is not a factor.
9,523 ÷ 37 = 257.3784 - This has a remainder. 37 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
9,523 ÷ 89 = 107 - No remainder! 89 is one of the factors!
107 ÷ 89 = 1.2022 - There is a remainder. We can't divide by 89 evenly anymore. Let's try the next prime number
107 ÷ 97 = 1.1031 - This has a remainder. 97 is not a factor.
107 ÷ 101 = 1.0594 - This has a remainder. 101 is not a factor.
107 ÷ 103 = 1.0388 - This has a remainder. 103 is not a factor.
107 ÷ 107 = 1 - No remainder! 107 is one of the factors!

The orange divisor(s) above are the prime factors of the number 8,323,102. If we put all of it together we have the factors 2 x 19 x 23 x 89 x 107 = 8,323,102. It can also be written in exponential form as 21 x 191 x 231 x 891 x 1071.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 8,323,102.

8,323,102
Factor Arrows
24,161,551
Factor Arrows
19219,029
Factor Arrows
239,523
Factor Arrows
89107

More Prime Factorization Examples

8,323,1008,323,1018,323,1038,323,104
22 x 52 x 83,231133 x 308,26318,323,103125 x 31 x 1811 x 4791

Try the factor calculator

Explore more about the number 8,323,102:


Ask a Question