Q: What are the prime factors of the number 327,240?

 A: 2, 3, 5, 101

Why are those the prime factors of the number 327,240?

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 327,240

327,240
Factor Arrows
2163,620
Factor Arrows
281,810
Factor Arrows
240,905
Factor Arrows
313,635
Factor Arrows
34,545
Factor Arrows
31,515
Factor Arrows
3505
Factor Arrows
5101

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, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 101 = 327,240

This can also be written as 23 x 34 x 51 x 1011 = 327,240

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


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