Q: What are the prime factors of the number 4,222,464?

 A: 2, 3, 2749

Why are those the prime factors of the number 4,222,464?

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 4,222,464

4,222,464
Factor Arrows
22,111,232
Factor Arrows
21,055,616
Factor Arrows
2527,808
Factor Arrows
2263,904
Factor Arrows
2131,952
Factor Arrows
265,976
Factor Arrows
232,988
Factor Arrows
216,494
Factor Arrows
28,247
Factor Arrows
32,749

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, 2749

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 2,749 = 4,222,464

This can also be written as 29 x 31 x 2,7491 = 4,222,464

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


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