Q: What are the prime factors of the number 310,016?

 A: 2, 7, 173

Why are those the prime factors of the number 310,016?

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 310,016

310,016
Factor Arrows
2155,008
Factor Arrows
277,504
Factor Arrows
238,752
Factor Arrows
219,376
Factor Arrows
29,688
Factor Arrows
24,844
Factor Arrows
22,422
Factor Arrows
21,211
Factor Arrows
7173

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, 173

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 7 x 173 = 310,016

This can also be written as 28 x 71 x 1731 = 310,016

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


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