Q: What are the prime factors of the number 726,520?

 A: 2, 5, 41, 443

Why are those the prime factors of the number 726,520?

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 726,520

726,520
Factor Arrows
2363,260
Factor Arrows
2181,630
Factor Arrows
290,815
Factor Arrows
518,163
Factor Arrows
41443

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, 41, 443

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 41 x 443 = 726,520

This can also be written as 23 x 51 x 411 x 4431 = 726,520

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


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