Q: What are the prime factors of the number 720,534,612?

 A: 2, 3, 7, 31, 5647

Why are those the prime factors of the number 720,534,612?

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 720,534,612

720,534,612
Factor Arrows
2360,267,306
Factor Arrows
2180,133,653
Factor Arrows
360,044,551
Factor Arrows
78,577,793
Factor Arrows
71,225,399
Factor Arrows
7175,057
Factor Arrows
315,647

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, 7, 31, 5647

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 7 x 31 x 5,647 = 720,534,612

This can also be written as 22 x 31 x 73 x 311 x 5,6471 = 720,534,612

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


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