Q: What are the prime factors of the number 719,240?

 A: 2, 5, 17981

Why are those the prime factors of the number 719,240?

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 719,240

719,240
Factor Arrows
2359,620
Factor Arrows
2179,810
Factor Arrows
289,905
Factor Arrows
517,981

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, 17981

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17,981 = 719,240

This can also be written as 23 x 51 x 17,9811 = 719,240

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


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