Q: What are the prime factors of the number 28,855,134?

 A: 2, 3, 7, 11, 109, 191

Why are those the prime factors of the number 28,855,134?

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 28,855,134

28,855,134
Factor Arrows
214,427,567
Factor Arrows
34,809,189
Factor Arrows
31,603,063
Factor Arrows
7229,009
Factor Arrows
1120,819
Factor Arrows
109191

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, 11, 109, 191

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 11 x 109 x 191 = 28,855,134

This can also be written as 21 x 32 x 71 x 111 x 1091 x 1911 = 28,855,134

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


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