Q: What are the prime factors of the number 5,420,331?

 A: 3, 7, 17, 241

Why are those the prime factors of the number 5,420,331?

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 5,420,331

5,420,331
Factor Arrows
31,806,777
Factor Arrows
3602,259
Factor Arrows
3200,753
Factor Arrows
728,679
Factor Arrows
74,097
Factor Arrows
17241

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:

3, 7, 17, 241

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 7 x 17 x 241 = 5,420,331

This can also be written as 33 x 72 x 171 x 2411 = 5,420,331

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


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