Q: What are the prime factors of the number 318,180?

 A: 2, 3, 5, 5303

Why are those the prime factors of the number 318,180?

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 318,180

318,180
Factor Arrows
2159,090
Factor Arrows
279,545
Factor Arrows
326,515
Factor Arrows
55,303

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, 5303

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5,303 = 318,180

This can also be written as 22 x 31 x 51 x 5,3031 = 318,180

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


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