Q: What are the prime factors of the number 30,013,200?

 A: 2, 3, 5, 7, 397

Why are those the prime factors of the number 30,013,200?

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 30,013,200

30,013,200
Factor Arrows
215,006,600
Factor Arrows
27,503,300
Factor Arrows
23,751,650
Factor Arrows
21,875,825
Factor Arrows
3625,275
Factor Arrows
3208,425
Factor Arrows
369,475
Factor Arrows
513,895
Factor Arrows
52,779
Factor Arrows
7397

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, 397

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 5 x 5 x 7 x 397 = 30,013,200

This can also be written as 24 x 33 x 52 x 71 x 3971 = 30,013,200

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


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