Q: What are the prime factors of the number 168,265,170?

 A: 2, 3, 5, 47, 39779

Why are those the prime factors of the number 168,265,170?

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 168,265,170

168,265,170
Factor Arrows
284,132,585
Factor Arrows
328,044,195
Factor Arrows
39,348,065
Factor Arrows
51,869,613
Factor Arrows
4739,779

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, 5, 47, 39779

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 47 x 39,779 = 168,265,170

This can also be written as 21 x 32 x 51 x 471 x 39,7791 = 168,265,170

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


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