Q: What are the prime factors of the number 3,420,032?

 A: 2, 7, 11, 347

Why are those the prime factors of the number 3,420,032?

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 3,420,032

3,420,032
Factor Arrows
21,710,016
Factor Arrows
2855,008
Factor Arrows
2427,504
Factor Arrows
2213,752
Factor Arrows
2106,876
Factor Arrows
253,438
Factor Arrows
226,719
Factor Arrows
73,817
Factor Arrows
11347

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, 11, 347

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 11 x 347 = 3,420,032

This can also be written as 27 x 71 x 111 x 3471 = 3,420,032

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


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