Q: What are the prime factors of the number 101,120,000?

 A: 2, 5, 79

Why are those the prime factors of the number 101,120,000?

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 101,120,000

101,120,000
Factor Arrows
250,560,000
Factor Arrows
225,280,000
Factor Arrows
212,640,000
Factor Arrows
26,320,000
Factor Arrows
23,160,000
Factor Arrows
21,580,000
Factor Arrows
2790,000
Factor Arrows
2395,000
Factor Arrows
2197,500
Factor Arrows
298,750
Factor Arrows
249,375
Factor Arrows
59,875
Factor Arrows
51,975
Factor Arrows
5395
Factor Arrows
579

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, 79

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 2 x 2 x 2 x 5 x 5 x 5 x 5 x 79 = 101,120,000

This can also be written as 211 x 54 x 791 = 101,120,000

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


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