Q: What are the prime factors of the number 724,724?

 A: 2, 7, 11, 13, 181

Why are those the prime factors of the number 724,724?

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 724,724

724,724
Factor Arrows
2362,362
Factor Arrows
2181,181
Factor Arrows
725,883
Factor Arrows
112,353
Factor Arrows
13181

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, 7, 11, 13, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 11 x 13 x 181 = 724,724

This can also be written as 22 x 71 x 111 x 131 x 1811 = 724,724

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


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