Q: What are the prime factors of the number 310,000?

 A: 2, 5, 31

Why are those the prime factors of the number 310,000?

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 310,000

310,000
Factor Arrows
2155,000
Factor Arrows
277,500
Factor Arrows
238,750
Factor Arrows
219,375
Factor Arrows
53,875
Factor Arrows
5775
Factor Arrows
5155
Factor Arrows
531

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, 5, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 5 x 5 x 31 = 310,000

This can also be written as 24 x 54 x 311 = 310,000

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


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