Q: What are the prime factors of the number 578,740?

 A: 2, 5, 19, 1523

Why are those the prime factors of the number 578,740?

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 578,740

578,740
Factor Arrows
2289,370
Factor Arrows
2144,685
Factor Arrows
528,937
Factor Arrows
191,523

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, 19, 1523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 19 x 1,523 = 578,740

This can also be written as 22 x 51 x 191 x 1,5231 = 578,740

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


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