Q: What are the prime factors of the number 322,112,000?

 A: 2, 5, 7, 719

Why are those the prime factors of the number 322,112,000?

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 322,112,000

322,112,000
Factor Arrows
2161,056,000
Factor Arrows
280,528,000
Factor Arrows
240,264,000
Factor Arrows
220,132,000
Factor Arrows
210,066,000
Factor Arrows
25,033,000
Factor Arrows
22,516,500
Factor Arrows
21,258,250
Factor Arrows
2629,125
Factor Arrows
5125,825
Factor Arrows
525,165
Factor Arrows
55,033
Factor Arrows
7719

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, 7, 719

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 2 x 2 x 2 x 5 x 5 x 5 x 7 x 719 = 322,112,000

This can also be written as 29 x 53 x 71 x 7191 = 322,112,000

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


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