Q: What are the prime factors of the number 173,412,736?

 A: 2, 7, 193541

Why are those the prime factors of the number 173,412,736?

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 173,412,736

173,412,736
Factor Arrows
286,706,368
Factor Arrows
243,353,184
Factor Arrows
221,676,592
Factor Arrows
210,838,296
Factor Arrows
25,419,148
Factor Arrows
22,709,574
Factor Arrows
21,354,787
Factor Arrows
7193,541

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, 193541

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 7 x 193,541 = 173,412,736

This can also be written as 27 x 71 x 193,5411 = 173,412,736

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


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