Q: What are the prime factors of the number 8,424,486?

 A: 2, 3, 7, 17, 19, 23

Why are those the prime factors of the number 8,424,486?

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 8,424,486

8,424,486
Factor Arrows
24,212,243
Factor Arrows
31,404,081
Factor Arrows
3468,027
Factor Arrows
3156,009
Factor Arrows
352,003
Factor Arrows
77,429
Factor Arrows
17437
Factor Arrows
1923

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, 17, 19, 23

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 7 x 17 x 19 x 23 = 8,424,486

This can also be written as 21 x 34 x 71 x 171 x 191 x 231 = 8,424,486

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


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