Q: What are the prime factors of the number 13,743,240?

 A: 2, 3, 5, 7, 16361

Why are those the prime factors of the number 13,743,240?

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 13,743,240

13,743,240
Factor Arrows
26,871,620
Factor Arrows
23,435,810
Factor Arrows
21,717,905
Factor Arrows
3572,635
Factor Arrows
5114,527
Factor Arrows
716,361

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, 7, 16361

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 7 x 16,361 = 13,743,240

This can also be written as 23 x 31 x 51 x 71 x 16,3611 = 13,743,240

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


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