Q: What are the prime factors of the number 1,631,344?

 A: 2, 11, 13, 23, 31

Why are those the prime factors of the number 1,631,344?

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 1,631,344

1,631,344
Factor Arrows
2815,672
Factor Arrows
2407,836
Factor Arrows
2203,918
Factor Arrows
2101,959
Factor Arrows
119,269
Factor Arrows
13713
Factor Arrows
2331

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, 11, 13, 23, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 13 x 23 x 31 = 1,631,344

This can also be written as 24 x 111 x 131 x 231 x 311 = 1,631,344

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


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