Q: What are the prime factors of the number 13,403,340?

 A: 2, 3, 5, 24821

Why are those the prime factors of the number 13,403,340?

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 13,403,340

13,403,340
Factor Arrows
26,701,670
Factor Arrows
23,350,835
Factor Arrows
31,116,945
Factor Arrows
3372,315
Factor Arrows
3124,105
Factor Arrows
524,821

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, 5, 24821

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 24,821 = 13,403,340

This can also be written as 22 x 33 x 51 x 24,8211 = 13,403,340

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


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