Q: What are the prime factors of the number 130,021,200?

 A: 2, 3, 5, 4013

Why are those the prime factors of the number 130,021,200?

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 130,021,200

130,021,200
Factor Arrows
265,010,600
Factor Arrows
232,505,300
Factor Arrows
216,252,650
Factor Arrows
28,126,325
Factor Arrows
32,708,775
Factor Arrows
3902,925
Factor Arrows
3300,975
Factor Arrows
3100,325
Factor Arrows
520,065
Factor Arrows
54,013

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, 4013

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 5 x 4,013 = 130,021,200

This can also be written as 24 x 34 x 52 x 4,0131 = 130,021,200

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


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