Q: What is the prime factorization of the number 244,915?

 A:
  • The prime factors are: 5 x 11 x 61 x 73
    • or also written as { 5, 11, 61, 73 }
  • Written in exponential form: 51 x 111 x 611 x 731

Why is the prime factorization of 244,915 written as 51 x 111 x 611 x 731?

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 244,915

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 244,915 by 2

244,915 ÷ 2 = 122,457.5 - This has a remainder. Let's try another prime number.
244,915 ÷ 3 = 81,638.3333 - This has a remainder. Let's try another prime number.
244,915 ÷ 5 = 48,983 - No remainder! 5 is one of the factors!
48,983 ÷ 5 = 9,796.6 - There is a remainder. We can't divide by 5 evenly anymore. Let's try the next prime number
48,983 ÷ 7 = 6,997.5714 - This has a remainder. 7 is not a factor.
48,983 ÷ 11 = 4,453 - No remainder! 11 is one of the factors!
4,453 ÷ 11 = 404.8182 - There is a remainder. We can't divide by 11 evenly anymore. Let's try the next prime number
4,453 ÷ 13 = 342.5385 - This has a remainder. 13 is not a factor.
4,453 ÷ 17 = 261.9412 - This has a remainder. 17 is not a factor.
4,453 ÷ 19 = 234.3684 - This has a remainder. 19 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
4,453 ÷ 61 = 73 - No remainder! 61 is one of the factors!
73 ÷ 61 = 1.1967 - There is a remainder. We can't divide by 61 evenly anymore. Let's try the next prime number
73 ÷ 67 = 1.0896 - This has a remainder. 67 is not a factor.
73 ÷ 71 = 1.0282 - This has a remainder. 71 is not a factor.
73 ÷ 73 = 1 - No remainder! 73 is one of the factors!

The orange divisor(s) above are the prime factors of the number 244,915. If we put all of it together we have the factors 5 x 11 x 61 x 73 = 244,915. It can also be written in exponential form as 51 x 111 x 611 x 731.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 244,915.

244,915
Factor Arrows
548,983
Factor Arrows
114,453
Factor Arrows
6173

More Prime Factorization Examples

244,913244,914244,916244,917
531 x 4,621121 x 31 x 40,819122 x 71 x 8,747133 x 471 x 1931

Try the factor calculator

Explore more about the number 244,915:


Ask a Question