Q: What are the prime factors of the number 408,744?

 A: 2, 3, 7, 811

Why are those the prime factors of the number 408,744?

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 408,744

408,744
Factor Arrows
2204,372
Factor Arrows
2102,186
Factor Arrows
251,093
Factor Arrows
317,031
Factor Arrows
35,677
Factor Arrows
7811

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, 7, 811

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 811 = 408,744

This can also be written as 23 x 32 x 71 x 8111 = 408,744

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


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