Q: What are the prime factors of the number 15,382,800?

 A: 2, 3, 5, 4273

Why are those the prime factors of the number 15,382,800?

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 15,382,800

15,382,800
Factor Arrows
27,691,400
Factor Arrows
23,845,700
Factor Arrows
21,922,850
Factor Arrows
2961,425
Factor Arrows
3320,475
Factor Arrows
3106,825
Factor Arrows
521,365
Factor Arrows
54,273

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, 4273

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 5 x 5 x 4,273 = 15,382,800

This can also be written as 24 x 32 x 52 x 4,2731 = 15,382,800

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


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