Q: What are the prime factors of the number 16,147,836?

 A: 2, 3, 37, 449

Why are those the prime factors of the number 16,147,836?

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 16,147,836

16,147,836
Factor Arrows
28,073,918
Factor Arrows
24,036,959
Factor Arrows
31,345,653
Factor Arrows
3448,551
Factor Arrows
3149,517
Factor Arrows
349,839
Factor Arrows
316,613
Factor Arrows
37449

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, 37, 449

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 37 x 449 = 16,147,836

This can also be written as 22 x 35 x 371 x 4491 = 16,147,836

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


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