Q: What are the prime factors of the number 13,525,408?

 A: 2, 13, 41, 61

Why are those the prime factors of the number 13,525,408?

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 13,525,408

13,525,408
Factor Arrows
26,762,704
Factor Arrows
23,381,352
Factor Arrows
21,690,676
Factor Arrows
2845,338
Factor Arrows
2422,669
Factor Arrows
1332,513
Factor Arrows
132,501
Factor Arrows
4161

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, 13, 41, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 13 x 41 x 61 = 13,525,408

This can also be written as 25 x 132 x 411 x 611 = 13,525,408

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


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