Q: What are the prime factors of the number 16,506,780?

 A: 2, 3, 5, 103, 2671

Why are those the prime factors of the number 16,506,780?

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 16,506,780

16,506,780
Factor Arrows
28,253,390
Factor Arrows
24,126,695
Factor Arrows
31,375,565
Factor Arrows
5275,113
Factor Arrows
1032,671

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, 103, 2671

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 103 x 2,671 = 16,506,780

This can also be written as 22 x 31 x 51 x 1031 x 2,6711 = 16,506,780

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


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