Q: What are the prime factors of the number 1,665,444?

 A: 2, 3, 11, 31, 37

Why are those the prime factors of the number 1,665,444?

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 1,665,444

1,665,444
Factor Arrows
2832,722
Factor Arrows
2416,361
Factor Arrows
3138,787
Factor Arrows
1112,617
Factor Arrows
111,147
Factor Arrows
3137

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, 11, 31, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 11 x 11 x 31 x 37 = 1,665,444

This can also be written as 22 x 31 x 112 x 311 x 371 = 1,665,444

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


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