Q: What are the prime factors of the number 13,243,551?

 A: 3, 19, 283, 821

Why are those the prime factors of the number 13,243,551?

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 13,243,551

13,243,551
Factor Arrows
34,414,517
Factor Arrows
19232,343
Factor Arrows
283821

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:

3, 19, 283, 821

We can check our work by multiplying all of the prime factors together: 3 x 19 x 283 x 821 = 13,243,551

This can also be written as 31 x 191 x 2831 x 8211 = 13,243,551

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


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