Q: What are the prime factors of the number 67,221,063?

 A: 3, 7, 13, 109, 251

Why are those the prime factors of the number 67,221,063?

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 67,221,063

67,221,063
Factor Arrows
322,407,021
Factor Arrows
37,469,007
Factor Arrows
32,489,669
Factor Arrows
7355,667
Factor Arrows
1327,359
Factor Arrows
109251

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, 7, 13, 109, 251

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 13 x 109 x 251 = 67,221,063

This can also be written as 33 x 71 x 131 x 1091 x 2511 = 67,221,063

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


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