Q: What are the prime factors of the number 1,107,648?

 A: 2, 3, 641

Why are those the prime factors of the number 1,107,648?

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 1,107,648

1,107,648
Factor Arrows
2553,824
Factor Arrows
2276,912
Factor Arrows
2138,456
Factor Arrows
269,228
Factor Arrows
234,614
Factor Arrows
217,307
Factor Arrows
35,769
Factor Arrows
31,923
Factor Arrows
3641

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, 641

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 3 x 641 = 1,107,648

This can also be written as 26 x 33 x 6411 = 1,107,648

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


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