Q: What are the prime factors of the number 21,300,032?

 A: 2, 13, 25601

Why are those the prime factors of the number 21,300,032?

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 21,300,032

21,300,032
Factor Arrows
210,650,016
Factor Arrows
25,325,008
Factor Arrows
22,662,504
Factor Arrows
21,331,252
Factor Arrows
2665,626
Factor Arrows
2332,813
Factor Arrows
1325,601

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, 13, 25601

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 13 x 25,601 = 21,300,032

This can also be written as 26 x 131 x 25,6011 = 21,300,032

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


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