Q: What are the prime factors of the number 30,164,400?

 A: 2, 3, 5, 7, 19

Why are those the prime factors of the number 30,164,400?

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 30,164,400

30,164,400
Factor Arrows
215,082,200
Factor Arrows
27,541,100
Factor Arrows
23,770,550
Factor Arrows
21,885,275
Factor Arrows
3628,425
Factor Arrows
3209,475
Factor Arrows
369,825
Factor Arrows
323,275
Factor Arrows
54,655
Factor Arrows
5931
Factor Arrows
7133
Factor Arrows
719

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, 19

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 5 x 7 x 7 x 19 = 30,164,400

This can also be written as 24 x 34 x 52 x 72 x 191 = 30,164,400

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


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