Q: What are the prime factors of the number 824,220?

 A: 2, 3, 5, 19, 241

Why are those the prime factors of the number 824,220?

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 824,220

824,220
Factor Arrows
2412,110
Factor Arrows
2206,055
Factor Arrows
368,685
Factor Arrows
322,895
Factor Arrows
54,579
Factor Arrows
19241

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, 19, 241

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 19 x 241 = 824,220

This can also be written as 22 x 32 x 51 x 191 x 2411 = 824,220

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


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