Q: What are the prime factors of the number 8,168,398?

 A: 2, 7, 17, 4903

Why are those the prime factors of the number 8,168,398?

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 8,168,398

8,168,398
Factor Arrows
24,084,199
Factor Arrows
7583,457
Factor Arrows
783,351
Factor Arrows
174,903

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, 7, 17, 4903

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 17 x 4,903 = 8,168,398

This can also be written as 21 x 72 x 171 x 4,9031 = 8,168,398

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


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