Q: What are the prime factors of the number 13,397,776?

 A: 2, 7, 23, 743

Why are those the prime factors of the number 13,397,776?

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 13,397,776

13,397,776
Factor Arrows
26,698,888
Factor Arrows
23,349,444
Factor Arrows
21,674,722
Factor Arrows
2837,361
Factor Arrows
7119,623
Factor Arrows
717,089
Factor Arrows
23743

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, 7, 23, 743

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 23 x 743 = 13,397,776

This can also be written as 24 x 72 x 231 x 7431 = 13,397,776

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


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