Q: What are the prime factors of the number 1,329,312?

 A: 2, 3, 61, 227

Why are those the prime factors of the number 1,329,312?

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 1,329,312

1,329,312
Factor Arrows
2664,656
Factor Arrows
2332,328
Factor Arrows
2166,164
Factor Arrows
283,082
Factor Arrows
241,541
Factor Arrows
313,847
Factor Arrows
61227

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, 61, 227

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 61 x 227 = 1,329,312

This can also be written as 25 x 31 x 611 x 2271 = 1,329,312

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


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