Q: What are the prime factors of the number 13,201,188?

 A: 2, 3, 7, 11, 13, 157

Why are those the prime factors of the number 13,201,188?

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 13,201,188

13,201,188
Factor Arrows
26,600,594
Factor Arrows
23,300,297
Factor Arrows
31,100,099
Factor Arrows
7157,157
Factor Arrows
722,451
Factor Arrows
112,041
Factor Arrows
13157

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, 7, 11, 13, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 11 x 13 x 157 = 13,201,188

This can also be written as 22 x 31 x 72 x 111 x 131 x 1571 = 13,201,188

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


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