Q: What are the prime factors of the number 16,541,140?

 A: 2, 5, 7, 11, 23, 467

Why are those the prime factors of the number 16,541,140?

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 16,541,140

16,541,140
Factor Arrows
28,270,570
Factor Arrows
24,135,285
Factor Arrows
5827,057
Factor Arrows
7118,151
Factor Arrows
1110,741
Factor Arrows
23467

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, 5, 7, 11, 23, 467

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 11 x 23 x 467 = 16,541,140

This can also be written as 22 x 51 x 71 x 111 x 231 x 4671 = 16,541,140

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


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