Q: What are the prime factors of the number 165,210,012?

 A: 2, 3, 11, 17, 23, 97

Why are those the prime factors of the number 165,210,012?

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 165,210,012

165,210,012
Factor Arrows
282,605,006
Factor Arrows
241,302,503
Factor Arrows
313,767,501
Factor Arrows
34,589,167
Factor Arrows
11417,197
Factor Arrows
1137,927
Factor Arrows
172,231
Factor Arrows
2397

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, 17, 23, 97

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 11 x 11 x 17 x 23 x 97 = 165,210,012

This can also be written as 22 x 32 x 112 x 171 x 231 x 971 = 165,210,012

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


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