Q: What are the prime factors of the number 1,533,504?

 A: 2, 3, 7, 163

Why are those the prime factors of the number 1,533,504?

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 1,533,504

1,533,504
Factor Arrows
2766,752
Factor Arrows
2383,376
Factor Arrows
2191,688
Factor Arrows
295,844
Factor Arrows
247,922
Factor Arrows
223,961
Factor Arrows
37,987
Factor Arrows
71,141
Factor Arrows
7163

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, 7, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 7 x 163 = 1,533,504

This can also be written as 26 x 31 x 72 x 1631 = 1,533,504

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


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