Q: What are the prime factors of the number 986,240?

 A: 2, 5, 23, 67

Why are those the prime factors of the number 986,240?

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 986,240

986,240
Factor Arrows
2493,120
Factor Arrows
2246,560
Factor Arrows
2123,280
Factor Arrows
261,640
Factor Arrows
230,820
Factor Arrows
215,410
Factor Arrows
27,705
Factor Arrows
51,541
Factor Arrows
2367

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, 23, 67

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 5 x 23 x 67 = 986,240

This can also be written as 27 x 51 x 231 x 671 = 986,240

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


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