Q: What are the prime factors of the number 1,211,112?

 A: 2, 3, 7, 89

Why are those the prime factors of the number 1,211,112?

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 1,211,112

1,211,112
Factor Arrows
2605,556
Factor Arrows
2302,778
Factor Arrows
2151,389
Factor Arrows
350,463
Factor Arrows
316,821
Factor Arrows
35,607
Factor Arrows
31,869
Factor Arrows
3623
Factor Arrows
789

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, 7, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 7 x 89 = 1,211,112

This can also be written as 23 x 35 x 71 x 891 = 1,211,112

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


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