Q: What are the prime factors of the number 13,120,002?

 A: 2, 3, 7, 61, 569

Why are those the prime factors of the number 13,120,002?

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 13,120,002

13,120,002
Factor Arrows
26,560,001
Factor Arrows
32,186,667
Factor Arrows
3728,889
Factor Arrows
3242,963
Factor Arrows
734,709
Factor Arrows
61569

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, 61, 569

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7 x 61 x 569 = 13,120,002

This can also be written as 21 x 33 x 71 x 611 x 5691 = 13,120,002

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


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