Q: What are the prime factors of the number 7,387,200?

 A: 2, 3, 5, 19

Why are those the prime factors of the number 7,387,200?

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 7,387,200

7,387,200
Factor Arrows
23,693,600
Factor Arrows
21,846,800
Factor Arrows
2923,400
Factor Arrows
2461,700
Factor Arrows
2230,850
Factor Arrows
2115,425
Factor Arrows
338,475
Factor Arrows
312,825
Factor Arrows
34,275
Factor Arrows
31,425
Factor Arrows
3475
Factor Arrows
595
Factor Arrows
519

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, 19

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 3 x 3 x 3 x 3 x 3 x 5 x 5 x 19 = 7,387,200

This can also be written as 26 x 35 x 52 x 191 = 7,387,200

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


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