Q: What are the prime factors of the number 101,501,100?

 A: 2, 3, 5, 4177

Why are those the prime factors of the number 101,501,100?

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 101,501,100

101,501,100
Factor Arrows
250,750,550
Factor Arrows
225,375,275
Factor Arrows
38,458,425
Factor Arrows
32,819,475
Factor Arrows
3939,825
Factor Arrows
3313,275
Factor Arrows
3104,425
Factor Arrows
520,885
Factor Arrows
54,177

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, 4177

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 5 x 5 x 4,177 = 101,501,100

This can also be written as 22 x 35 x 52 x 4,1771 = 101,501,100

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


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