Q: What are the prime factors of the number 168,735,744?

 A: 2, 3, 17, 359

Why are those the prime factors of the number 168,735,744?

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 168,735,744

168,735,744
Factor Arrows
284,367,872
Factor Arrows
242,183,936
Factor Arrows
221,091,968
Factor Arrows
210,545,984
Factor Arrows
25,272,992
Factor Arrows
22,636,496
Factor Arrows
21,318,248
Factor Arrows
2659,124
Factor Arrows
2329,562
Factor Arrows
2164,781
Factor Arrows
354,927
Factor Arrows
318,309
Factor Arrows
36,103
Factor Arrows
17359

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, 17, 359

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 2 x 2 x 2 x 2 x 3 x 3 x 3 x 17 x 359 = 168,735,744

This can also be written as 210 x 33 x 171 x 3591 = 168,735,744

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


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