Q: What are the prime factors of the number 270?

 A: 2, 3, 5

Why are those the prime factors of the number 270?

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 270

270
Factor Arrows
2135
Factor Arrows
345
Factor Arrows
315
Factor Arrows
35

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

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 = 270

This can also be written as 21 x 33 x 51 = 270

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


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