Q: What are the prime factors of the number 1,629,824?

 A: 2, 7, 17, 107

Why are those the prime factors of the number 1,629,824?

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 1,629,824

1,629,824
Factor Arrows
2814,912
Factor Arrows
2407,456
Factor Arrows
2203,728
Factor Arrows
2101,864
Factor Arrows
250,932
Factor Arrows
225,466
Factor Arrows
212,733
Factor Arrows
71,819
Factor Arrows
17107

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, 7, 17, 107

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 2 x 7 x 17 x 107 = 1,629,824

This can also be written as 27 x 71 x 171 x 1071 = 1,629,824

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


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