Q: What are the prime factors of the number 243,330?

 A: 2, 3, 5, 8111

Why are those the prime factors of the number 243,330?

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 243,330

243,330
Factor Arrows
2121,665
Factor Arrows
340,555
Factor Arrows
58,111

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, 8111

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 8,111 = 243,330

This can also be written as 21 x 31 x 51 x 8,1111 = 243,330

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


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