Q: What are the prime factors of the number 4,981,320?

 A: 2, 3, 5, 101, 137

Why are those the prime factors of the number 4,981,320?

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 4,981,320

4,981,320
Factor Arrows
22,490,660
Factor Arrows
21,245,330
Factor Arrows
2622,665
Factor Arrows
3207,555
Factor Arrows
369,185
Factor Arrows
513,837
Factor Arrows
101137

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, 5, 101, 137

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 101 x 137 = 4,981,320

This can also be written as 23 x 32 x 51 x 1011 x 1371 = 4,981,320

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


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