Q: What are the prime factors of the number 450,120?

 A: 2, 3, 5, 11, 31

Why are those the prime factors of the number 450,120?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 450,120

450,120
Factor Arrows
2225,060
Factor Arrows
2112,530
Factor Arrows
256,265
Factor Arrows
318,755
Factor Arrows
53,751
Factor Arrows
11341
Factor Arrows
1131

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 11, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 11 x 11 x 31 = 450,120

This can also be written as 23 x 31 x 51 x 112 x 311 = 450,120

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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