Q: What are the prime factors of the number 109,465,312?

 A: 2, 11, 17, 1663

Why are those the prime factors of the number 109,465,312?

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 109,465,312

109,465,312
Factor Arrows
254,732,656
Factor Arrows
227,366,328
Factor Arrows
213,683,164
Factor Arrows
26,841,582
Factor Arrows
23,420,791
Factor Arrows
11310,981
Factor Arrows
1128,271
Factor Arrows
171,663

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, 11, 17, 1663

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 11 x 17 x 1,663 = 109,465,312

This can also be written as 25 x 112 x 171 x 1,6631 = 109,465,312

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


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