Q: What are the prime factors of the number 165,415,744?

 A: 2, 13, 198817

Why are those the prime factors of the number 165,415,744?

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 165,415,744

165,415,744
Factor Arrows
282,707,872
Factor Arrows
241,353,936
Factor Arrows
220,676,968
Factor Arrows
210,338,484
Factor Arrows
25,169,242
Factor Arrows
22,584,621
Factor Arrows
13198,817

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, 13, 198817

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 13 x 198,817 = 165,415,744

This can also be written as 26 x 131 x 198,8171 = 165,415,744

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


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