Q: What are the prime factors of the number 722,470?

 A: 2, 5, 7, 10321

Why are those the prime factors of the number 722,470?

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 722,470

722,470
Factor Arrows
2361,235
Factor Arrows
572,247
Factor Arrows
710,321

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, 10321

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 10,321 = 722,470

This can also be written as 21 x 51 x 71 x 10,3211 = 722,470

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


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