Q: What are the prime factors of the number 319,704?

 A: 2, 3, 7, 11, 173

Why are those the prime factors of the number 319,704?

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 319,704

319,704
Factor Arrows
2159,852
Factor Arrows
279,926
Factor Arrows
239,963
Factor Arrows
313,321
Factor Arrows
71,903
Factor Arrows
11173

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, 7, 11, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 11 x 173 = 319,704

This can also be written as 23 x 31 x 71 x 111 x 1731 = 319,704

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


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