Q: What are the prime factors of the number 168,736,986?

 A: 2, 3, 11, 19, 14951

Why are those the prime factors of the number 168,736,986?

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 168,736,986

168,736,986
Factor Arrows
284,368,493
Factor Arrows
328,122,831
Factor Arrows
39,374,277
Factor Arrows
33,124,759
Factor Arrows
11284,069
Factor Arrows
1914,951

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, 11, 19, 14951

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 11 x 19 x 14,951 = 168,736,986

This can also be written as 21 x 33 x 111 x 191 x 14,9511 = 168,736,986

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


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