Q: What are the prime factors of the number 5,678,820?

 A: 2, 3, 5, 7, 4507

Why are those the prime factors of the number 5,678,820?

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 5,678,820

5,678,820
Factor Arrows
22,839,410
Factor Arrows
21,419,705
Factor Arrows
3473,235
Factor Arrows
3157,745
Factor Arrows
531,549
Factor Arrows
74,507

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, 7, 4507

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 7 x 4,507 = 5,678,820

This can also be written as 22 x 32 x 51 x 71 x 4,5071 = 5,678,820

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


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