Q: What are the prime factors of the number 13,086,208?

 A: 2, 61, 419

Why are those the prime factors of the number 13,086,208?

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 13,086,208

13,086,208
Factor Arrows
26,543,104
Factor Arrows
23,271,552
Factor Arrows
21,635,776
Factor Arrows
2817,888
Factor Arrows
2408,944
Factor Arrows
2204,472
Factor Arrows
2102,236
Factor Arrows
251,118
Factor Arrows
225,559
Factor Arrows
61419

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, 61, 419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 61 x 419 = 13,086,208

This can also be written as 29 x 611 x 4191 = 13,086,208

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


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