Q: What are the prime factors of the number 32,122,300?

 A: 2, 5, 7, 109, 421

Why are those the prime factors of the number 32,122,300?

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 32,122,300

32,122,300
Factor Arrows
216,061,150
Factor Arrows
28,030,575
Factor Arrows
51,606,115
Factor Arrows
5321,223
Factor Arrows
745,889
Factor Arrows
109421

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, 7, 109, 421

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 109 x 421 = 32,122,300

This can also be written as 22 x 52 x 71 x 1091 x 4211 = 32,122,300

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


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