Q: What are the prime factors of the number 106,428?

 A: 2, 3, 7, 181

Why are those the prime factors of the number 106,428?

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 106,428

106,428
Factor Arrows
253,214
Factor Arrows
226,607
Factor Arrows
38,869
Factor Arrows
71,267
Factor Arrows
7181

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, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 181 = 106,428

This can also be written as 22 x 31 x 72 x 1811 = 106,428

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


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