Q: What are the prime factors of the number 7,221,504?

 A: 2, 3, 9403

Why are those the prime factors of the number 7,221,504?

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 7,221,504

7,221,504
Factor Arrows
23,610,752
Factor Arrows
21,805,376
Factor Arrows
2902,688
Factor Arrows
2451,344
Factor Arrows
2225,672
Factor Arrows
2112,836
Factor Arrows
256,418
Factor Arrows
228,209
Factor Arrows
39,403

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, 9403

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 3 x 9,403 = 7,221,504

This can also be written as 28 x 31 x 9,4031 = 7,221,504

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


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