Q: What are the prime factors of the number 729,200?

 A: 2, 5, 1823

Why are those the prime factors of the number 729,200?

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 729,200

729,200
Factor Arrows
2364,600
Factor Arrows
2182,300
Factor Arrows
291,150
Factor Arrows
245,575
Factor Arrows
59,115
Factor Arrows
51,823

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, 1823

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 1,823 = 729,200

This can also be written as 24 x 52 x 1,8231 = 729,200

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


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