Q: What are the prime factors of the number 13,738,725?

 A: 3, 5, 7, 11, 13, 61

Why are those the prime factors of the number 13,738,725?

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 13,738,725

13,738,725
Factor Arrows
34,579,575
Factor Arrows
31,526,525
Factor Arrows
5305,305
Factor Arrows
561,061
Factor Arrows
78,723
Factor Arrows
11793
Factor Arrows
1361

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:

3, 5, 7, 11, 13, 61

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 7 x 11 x 13 x 61 = 13,738,725

This can also be written as 32 x 52 x 71 x 111 x 131 x 611 = 13,738,725

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


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