Q: What are the prime factors of the number 120,102,195?

 A: 3, 5, 17, 29, 109, 149

Why are those the prime factors of the number 120,102,195?

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 120,102,195

120,102,195
Factor Arrows
340,034,065
Factor Arrows
58,006,813
Factor Arrows
17470,989
Factor Arrows
2916,241
Factor Arrows
109149

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:

3, 5, 17, 29, 109, 149

We can check our work by multiplying all of the prime factors together: 3 x 5 x 17 x 29 x 109 x 149 = 120,102,195

This can also be written as 31 x 51 x 171 x 291 x 1091 x 1491 = 120,102,195

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


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