Q: What are the prime factors of the number 12,320,330?

 A: 2, 5, 11, 31, 3613

Why are those the prime factors of the number 12,320,330?

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 12,320,330

12,320,330
Factor Arrows
26,160,165
Factor Arrows
51,232,033
Factor Arrows
11112,003
Factor Arrows
313,613

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, 11, 31, 3613

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 31 x 3,613 = 12,320,330

This can also be written as 21 x 51 x 111 x 311 x 3,6131 = 12,320,330

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


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