Q: What are the prime factors of the number 481,581,620?

 A: 2, 5, 13, 109, 16993

Why are those the prime factors of the number 481,581,620?

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 481,581,620

481,581,620
Factor Arrows
2240,790,810
Factor Arrows
2120,395,405
Factor Arrows
524,079,081
Factor Arrows
131,852,237
Factor Arrows
10916,993

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, 13, 109, 16993

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 13 x 109 x 16,993 = 481,581,620

This can also be written as 22 x 51 x 131 x 1091 x 16,9931 = 481,581,620

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


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