Q: What are the prime factors of the number 18,627,258?

 A: 2, 3, 13, 19, 12569

Why are those the prime factors of the number 18,627,258?

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 18,627,258

18,627,258
Factor Arrows
29,313,629
Factor Arrows
33,104,543
Factor Arrows
13238,811
Factor Arrows
1912,569

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, 13, 19, 12569

We can check our work by multiplying all of the prime factors together: 2 x 3 x 13 x 19 x 12,569 = 18,627,258

This can also be written as 21 x 31 x 131 x 191 x 12,5691 = 18,627,258

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


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