Q: What are the prime factors of the number 1,098,768?

 A: 2, 3, 11, 2081

Why are those the prime factors of the number 1,098,768?

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 1,098,768

1,098,768
Factor Arrows
2549,384
Factor Arrows
2274,692
Factor Arrows
2137,346
Factor Arrows
268,673
Factor Arrows
322,891
Factor Arrows
112,081

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, 2081

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 2,081 = 1,098,768

This can also be written as 24 x 31 x 111 x 2,0811 = 1,098,768

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


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