Q: What are the prime factors of the number 314,688?

 A: 2, 3, 11, 149

Why are those the prime factors of the number 314,688?

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 314,688

314,688
Factor Arrows
2157,344
Factor Arrows
278,672
Factor Arrows
239,336
Factor Arrows
219,668
Factor Arrows
29,834
Factor Arrows
24,917
Factor Arrows
31,639
Factor Arrows
11149

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, 149

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 3 x 11 x 149 = 314,688

This can also be written as 26 x 31 x 111 x 1491 = 314,688

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


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