Q: What are the prime factors of the number 1,105,344?

 A: 2, 3, 19, 101

Why are those the prime factors of the number 1,105,344?

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 1,105,344

1,105,344
Factor Arrows
2552,672
Factor Arrows
2276,336
Factor Arrows
2138,168
Factor Arrows
269,084
Factor Arrows
234,542
Factor Arrows
217,271
Factor Arrows
35,757
Factor Arrows
31,919
Factor Arrows
19101

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, 19, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 19 x 101 = 1,105,344

This can also be written as 26 x 32 x 191 x 1011 = 1,105,344

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


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