Q: What are the prime factors of the number 784,704,720?

 A: 2, 3, 5, 59, 151, 367

Why are those the prime factors of the number 784,704,720?

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 784,704,720

784,704,720
Factor Arrows
2392,352,360
Factor Arrows
2196,176,180
Factor Arrows
298,088,090
Factor Arrows
249,044,045
Factor Arrows
316,348,015
Factor Arrows
53,269,603
Factor Arrows
5955,417
Factor Arrows
151367

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, 3, 5, 59, 151, 367

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 59 x 151 x 367 = 784,704,720

This can also be written as 24 x 31 x 51 x 591 x 1511 x 3671 = 784,704,720

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


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