Q: What are the prime factors of the number 820,008?

 A: 2, 3, 7, 1627

Why are those the prime factors of the number 820,008?

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 820,008

820,008
Factor Arrows
2410,004
Factor Arrows
2205,002
Factor Arrows
2102,501
Factor Arrows
334,167
Factor Arrows
311,389
Factor Arrows
71,627

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, 7, 1627

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 1,627 = 820,008

This can also be written as 23 x 32 x 71 x 1,6271 = 820,008

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


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