Q: What are the prime factors of the number 784,700?

 A: 2, 5, 7, 19, 59

Why are those the prime factors of the number 784,700?

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 784,700

784,700
Factor Arrows
2392,350
Factor Arrows
2196,175
Factor Arrows
539,235
Factor Arrows
57,847
Factor Arrows
71,121
Factor Arrows
1959

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, 7, 19, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 19 x 59 = 784,700

This can also be written as 22 x 52 x 71 x 191 x 591 = 784,700

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


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