Q: What are the prime factors of the number 16,488,472?

 A: 2, 7, 11, 13, 29, 71

Why are those the prime factors of the number 16,488,472?

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 16,488,472

16,488,472
Factor Arrows
28,244,236
Factor Arrows
24,122,118
Factor Arrows
22,061,059
Factor Arrows
7294,437
Factor Arrows
1126,767
Factor Arrows
132,059
Factor Arrows
2971

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, 7, 11, 13, 29, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 13 x 29 x 71 = 16,488,472

This can also be written as 23 x 71 x 111 x 131 x 291 x 711 = 16,488,472

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


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