Q: What are the prime factors of the number 3,483,840?

 A: 2, 3, 5, 19, 191

Why are those the prime factors of the number 3,483,840?

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 3,483,840

3,483,840
Factor Arrows
21,741,920
Factor Arrows
2870,960
Factor Arrows
2435,480
Factor Arrows
2217,740
Factor Arrows
2108,870
Factor Arrows
254,435
Factor Arrows
318,145
Factor Arrows
53,629
Factor Arrows
19191

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, 19, 191

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 5 x 19 x 191 = 3,483,840

This can also be written as 26 x 31 x 51 x 191 x 1911 = 3,483,840

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


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