Q: What are the prime factors of the number 101,122,120?

 A: 2, 5, 11, 17, 1229

Why are those the prime factors of the number 101,122,120?

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 101,122,120

101,122,120
Factor Arrows
250,561,060
Factor Arrows
225,280,530
Factor Arrows
212,640,265
Factor Arrows
52,528,053
Factor Arrows
11229,823
Factor Arrows
1120,893
Factor Arrows
171,229

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, 11, 17, 1229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 11 x 11 x 17 x 1,229 = 101,122,120

This can also be written as 23 x 51 x 112 x 171 x 1,2291 = 101,122,120

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


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