Q: What are the prime factors of the number 180,243?

 A: 3, 7, 2861

Why are those the prime factors of the number 180,243?

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 180,243

180,243
Factor Arrows
360,081
Factor Arrows
320,027
Factor Arrows
72,861

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:

3, 7, 2861

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 2,861 = 180,243

This can also be written as 32 x 71 x 2,8611 = 180,243

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


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