Q: What are the prime factors of the number 7,252,224?

 A: 2, 3, 7, 19, 71

Why are those the prime factors of the number 7,252,224?

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 7,252,224

7,252,224
Factor Arrows
23,626,112
Factor Arrows
21,813,056
Factor Arrows
2906,528
Factor Arrows
2453,264
Factor Arrows
2226,632
Factor Arrows
2113,316
Factor Arrows
256,658
Factor Arrows
228,329
Factor Arrows
39,443
Factor Arrows
71,349
Factor Arrows
1971

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, 19, 71

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 7 x 19 x 71 = 7,252,224

This can also be written as 28 x 31 x 71 x 191 x 711 = 7,252,224

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


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