Q: What is the prime factorization of the number 225,003,008?

 A:
  • The prime factors are: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 439,459
    • or also written as { 2, 2, 2, 2, 2, 2, 2, 2, 2, 439,459 }
  • Written in exponential form: 29 x 439,4591

Why is the prime factorization of 225,003,008 written as 29 x 439,4591?

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 225,003,008

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 225,003,008 by 2

225,003,008 ÷ 2 = 112,501,504 - No remainder! 2 is one of the factors!
112,501,504 ÷ 2 = 56,250,752 - No remainder! 2 is one of the factors!
56,250,752 ÷ 2 = 28,125,376 - No remainder! 2 is one of the factors!
28,125,376 ÷ 2 = 14,062,688 - No remainder! 2 is one of the factors!
14,062,688 ÷ 2 = 7,031,344 - No remainder! 2 is one of the factors!
7,031,344 ÷ 2 = 3,515,672 - No remainder! 2 is one of the factors!
3,515,672 ÷ 2 = 1,757,836 - No remainder! 2 is one of the factors!
1,757,836 ÷ 2 = 878,918 - No remainder! 2 is one of the factors!
878,918 ÷ 2 = 439,459 - No remainder! 2 is one of the factors!
439,459 ÷ 2 = 219,729.5 - There is a remainder. We can't divide by 2 evenly anymore. Let's try the next prime number
439,459 ÷ 3 = 146,486.3333 - This has a remainder. 3 is not a factor.
439,459 ÷ 5 = 87,891.8 - This has a remainder. 5 is not a factor.
439,459 ÷ 7 = 62,779.8571 - This has a remainder. 7 is not a factor.
...
Keep trying increasingly larger numbers until you find one that divides evenly.
...
439,459 ÷ 439,459 = 1 - No remainder! 439,459 is one of the factors!

The orange divisor(s) above are the prime factors of the number 225,003,008. If we put all of it together we have the factors 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 439,459 = 225,003,008. It can also be written in exponential form as 29 x 439,4591.

Factor Tree

Another way to do prime factorization is to use a factor tree. Below is a factor tree for the number 225,003,008.

225,003,008
Factor Arrows
2112,501,504
Factor Arrows
256,250,752
Factor Arrows
228,125,376
Factor Arrows
214,062,688
Factor Arrows
27,031,344
Factor Arrows
23,515,672
Factor Arrows
21,757,836
Factor Arrows
2878,918
Factor Arrows
2439,459

More Prime Factorization Examples

225,003,006225,003,007225,003,009225,003,010
21 x 32 x 471 x 265,9611171 x 13,235,471131 x 71 x 112 x 731 x 1,213121 x 51 x 1,5111 x 14,8911

Try the factor calculator

Explore more about the number 225,003,008:


Ask a Question