Q: What are the prime factors of the number 730,480?

 A: 2, 5, 23, 397

Why are those the prime factors of the number 730,480?

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 730,480

730,480
Factor Arrows
2365,240
Factor Arrows
2182,620
Factor Arrows
291,310
Factor Arrows
245,655
Factor Arrows
59,131
Factor Arrows
23397

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, 23, 397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 23 x 397 = 730,480

This can also be written as 24 x 51 x 231 x 3971 = 730,480

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


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