Q: What are the prime factors of the number 5,428,836?

 A: 2, 3, 7, 43, 167

Why are those the prime factors of the number 5,428,836?

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 5,428,836

5,428,836
Factor Arrows
22,714,418
Factor Arrows
21,357,209
Factor Arrows
3452,403
Factor Arrows
3150,801
Factor Arrows
350,267
Factor Arrows
77,181
Factor Arrows
43167

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, 7, 43, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 43 x 167 = 5,428,836

This can also be written as 22 x 33 x 71 x 431 x 1671 = 5,428,836

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


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