Q: What are the prime factors of the number 9,721,548?

 A: 2, 3, 23, 59, 199

Why are those the prime factors of the number 9,721,548?

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 9,721,548

9,721,548
Factor Arrows
24,860,774
Factor Arrows
22,430,387
Factor Arrows
3810,129
Factor Arrows
3270,043
Factor Arrows
2311,741
Factor Arrows
59199

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, 23, 59, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 23 x 59 x 199 = 9,721,548

This can also be written as 22 x 32 x 231 x 591 x 1991 = 9,721,548

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


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