Q: What are the prime factors of the number 101,553,540?

 A: 2, 3, 5, 11, 151, 1019

Why are those the prime factors of the number 101,553,540?

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 101,553,540

101,553,540
Factor Arrows
250,776,770
Factor Arrows
225,388,385
Factor Arrows
38,462,795
Factor Arrows
51,692,559
Factor Arrows
11153,869
Factor Arrows
1511,019

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, 5, 11, 151, 1019

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 11 x 151 x 1,019 = 101,553,540

This can also be written as 22 x 31 x 51 x 111 x 1511 x 1,0191 = 101,553,540

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


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