Q: What is the prime factorization of the number 204,527?

 A:
  • The prime factors are: 17 x 53 x 227
    • or also written as { 17, 53, 227 }
  • Written in exponential form: 171 x 531 x 2271

Why is the prime factorization of 204,527 written as 171 x 531 x 2271?

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 204,527

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 204,527 by 2

204,527 ÷ 2 = 102,263.5 - This has a remainder. Let's try another prime number.
204,527 ÷ 3 = 68,175.6667 - This has a remainder. Let's try another prime number.
204,527 ÷ 5 = 40,905.4 - This has a remainder. Let's try another prime number.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
204,527 ÷ 17 = 12,031 - No remainder! 17 is one of the factors!
12,031 ÷ 17 = 707.7059 - There is a remainder. We can't divide by 17 evenly anymore. Let's try the next prime number
12,031 ÷ 19 = 633.2105 - This has a remainder. 19 is not a factor.
12,031 ÷ 23 = 523.087 - This has a remainder. 23 is not a factor.
12,031 ÷ 29 = 414.8621 - This has a remainder. 29 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
12,031 ÷ 53 = 227 - No remainder! 53 is one of the factors!
227 ÷ 53 = 4.283 - There is a remainder. We can't divide by 53 evenly anymore. Let's try the next prime number
227 ÷ 59 = 3.8475 - This has a remainder. 59 is not a factor.
227 ÷ 61 = 3.7213 - This has a remainder. 61 is not a factor.
227 ÷ 67 = 3.3881 - This has a remainder. 67 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
227 ÷ 227 = 1 - No remainder! 227 is one of the factors!

The orange divisor(s) above are the prime factors of the number 204,527. If we put all of it together we have the factors 17 x 53 x 227 = 204,527. It can also be written in exponential form as 171 x 531 x 2271.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 204,527.

204,527
Factor Arrows
1712,031
Factor Arrows
53227

More Prime Factorization Examples

204,525204,526204,528204,529
34 x 52 x 101121 x 72 x 2,087124 x 31 x 4,2611131 x 15,7331

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