Q: What are the prime factors of the number 724,184,320?

 A: 2, 5, 565769

Why are those the prime factors of the number 724,184,320?

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 724,184,320

724,184,320
Factor Arrows
2362,092,160
Factor Arrows
2181,046,080
Factor Arrows
290,523,040
Factor Arrows
245,261,520
Factor Arrows
222,630,760
Factor Arrows
211,315,380
Factor Arrows
25,657,690
Factor Arrows
22,828,845
Factor Arrows
5565,769

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, 565769

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 565,769 = 724,184,320

This can also be written as 28 x 51 x 565,7691 = 724,184,320

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


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