Q: What are the prime factors of the number 1,339,200?

 A: 2, 3, 5, 31

Why are those the prime factors of the number 1,339,200?

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 1,339,200

1,339,200
Factor Arrows
2669,600
Factor Arrows
2334,800
Factor Arrows
2167,400
Factor Arrows
283,700
Factor Arrows
241,850
Factor Arrows
220,925
Factor Arrows
36,975
Factor Arrows
32,325
Factor Arrows
3775
Factor Arrows
5155
Factor Arrows
531

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, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 5 x 31 = 1,339,200

This can also be written as 26 x 33 x 52 x 311 = 1,339,200

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


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