Q: What are the prime factors of the number 16,179,120?

 A: 2, 3, 5, 23, 977

Why are those the prime factors of the number 16,179,120?

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 16,179,120

16,179,120
Factor Arrows
28,089,560
Factor Arrows
24,044,780
Factor Arrows
22,022,390
Factor Arrows
21,011,195
Factor Arrows
3337,065
Factor Arrows
3112,355
Factor Arrows
522,471
Factor Arrows
23977

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, 23, 977

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 23 x 977 = 16,179,120

This can also be written as 24 x 32 x 51 x 231 x 9771 = 16,179,120

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


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