Q: What are the prime factors of the number 872,400?

 A: 2, 3, 5, 727

Why are those the prime factors of the number 872,400?

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 872,400

872,400
Factor Arrows
2436,200
Factor Arrows
2218,100
Factor Arrows
2109,050
Factor Arrows
254,525
Factor Arrows
318,175
Factor Arrows
53,635
Factor Arrows
5727

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, 727

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 727 = 872,400

This can also be written as 24 x 31 x 52 x 7271 = 872,400

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


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