Q: What are the prime factors of the number 985,120?

 A: 2, 5, 47, 131

Why are those the prime factors of the number 985,120?

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 985,120

985,120
Factor Arrows
2492,560
Factor Arrows
2246,280
Factor Arrows
2123,140
Factor Arrows
261,570
Factor Arrows
230,785
Factor Arrows
56,157
Factor Arrows
47131

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, 47, 131

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 47 x 131 = 985,120

This can also be written as 25 x 51 x 471 x 1311 = 985,120

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


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