Q: What are the prime factors of the number 243,330,530?

 A: 2, 5, 19, 739, 1733

Why are those the prime factors of the number 243,330,530?

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 243,330,530

243,330,530
Factor Arrows
2121,665,265
Factor Arrows
524,333,053
Factor Arrows
191,280,687
Factor Arrows
7391,733

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, 5, 19, 739, 1733

We can check our work by multiplying all of the prime factors together: 2 x 5 x 19 x 739 x 1,733 = 243,330,530

This can also be written as 21 x 51 x 191 x 7391 x 1,7331 = 243,330,530

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


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