Q: What are the prime factors of the number 1,635,120?

 A: 2, 3, 5, 757

Why are those the prime factors of the number 1,635,120?

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 1,635,120

1,635,120
Factor Arrows
2817,560
Factor Arrows
2408,780
Factor Arrows
2204,390
Factor Arrows
2102,195
Factor Arrows
334,065
Factor Arrows
311,355
Factor Arrows
33,785
Factor Arrows
5757

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, 757

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 757 = 1,635,120

This can also be written as 24 x 33 x 51 x 7571 = 1,635,120

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


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