Q: What are the prime factors of the number 103,200?

 A: 2, 3, 5, 43

Why are those the prime factors of the number 103,200?

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 103,200

103,200
Factor Arrows
251,600
Factor Arrows
225,800
Factor Arrows
212,900
Factor Arrows
26,450
Factor Arrows
23,225
Factor Arrows
31,075
Factor Arrows
5215
Factor Arrows
543

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, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 5 x 43 = 103,200

This can also be written as 25 x 31 x 52 x 431 = 103,200

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


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