Q: What are the prime factors of the number 101,605,120?

 A: 2, 5, 79379

Why are those the prime factors of the number 101,605,120?

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 101,605,120

101,605,120
Factor Arrows
250,802,560
Factor Arrows
225,401,280
Factor Arrows
212,700,640
Factor Arrows
26,350,320
Factor Arrows
23,175,160
Factor Arrows
21,587,580
Factor Arrows
2793,790
Factor Arrows
2396,895
Factor Arrows
579,379

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, 5, 79379

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 79,379 = 101,605,120

This can also be written as 28 x 51 x 79,3791 = 101,605,120

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


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