Q: What are the prime factors of the number 868,400?

 A: 2, 5, 13, 167

Why are those the prime factors of the number 868,400?

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 868,400

868,400
Factor Arrows
2434,200
Factor Arrows
2217,100
Factor Arrows
2108,550
Factor Arrows
254,275
Factor Arrows
510,855
Factor Arrows
52,171
Factor Arrows
13167

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, 5, 13, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 13 x 167 = 868,400

This can also be written as 24 x 52 x 131 x 1671 = 868,400

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


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