Q: What are the prime factors of the number 175,440?

 A: 2, 3, 5, 17, 43

Why are those the prime factors of the number 175,440?

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 175,440

175,440
Factor Arrows
287,720
Factor Arrows
243,860
Factor Arrows
221,930
Factor Arrows
210,965
Factor Arrows
33,655
Factor Arrows
5731
Factor Arrows
1743

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, 17, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 17 x 43 = 175,440

This can also be written as 24 x 31 x 51 x 171 x 431 = 175,440

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


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