Q: What are the prime factors of the number 5,491,200?

 A: 2, 3, 5, 11, 13

Why are those the prime factors of the number 5,491,200?

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 5,491,200

5,491,200
Factor Arrows
22,745,600
Factor Arrows
21,372,800
Factor Arrows
2686,400
Factor Arrows
2343,200
Factor Arrows
2171,600
Factor Arrows
285,800
Factor Arrows
242,900
Factor Arrows
221,450
Factor Arrows
210,725
Factor Arrows
33,575
Factor Arrows
5715
Factor Arrows
5143
Factor Arrows
1113

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, 11, 13

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 2 x 2 x 2 x 3 x 5 x 5 x 11 x 13 = 5,491,200

This can also be written as 29 x 31 x 52 x 111 x 131 = 5,491,200

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


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