Q: What are the prime factors of the number 6,916,224?

 A: 2, 3, 7, 31, 83

Why are those the prime factors of the number 6,916,224?

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 6,916,224

6,916,224
Factor Arrows
23,458,112
Factor Arrows
21,729,056
Factor Arrows
2864,528
Factor Arrows
2432,264
Factor Arrows
2216,132
Factor Arrows
2108,066
Factor Arrows
254,033
Factor Arrows
318,011
Factor Arrows
72,573
Factor Arrows
3183

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, 31, 83

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 3 x 7 x 31 x 83 = 6,916,224

This can also be written as 27 x 31 x 71 x 311 x 831 = 6,916,224

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


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