Q: What are the prime factors of the number 13,201,380?

 A: 2, 3, 5, 29, 281

Why are those the prime factors of the number 13,201,380?

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 13,201,380

13,201,380
Factor Arrows
26,600,690
Factor Arrows
23,300,345
Factor Arrows
31,100,115
Factor Arrows
3366,705
Factor Arrows
3122,235
Factor Arrows
340,745
Factor Arrows
58,149
Factor Arrows
29281

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, 29, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 5 x 29 x 281 = 13,201,380

This can also be written as 22 x 34 x 51 x 291 x 2811 = 13,201,380

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


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