Q: What are the prime factors of the number 122,244,309?

 A: 3, 11, 19, 29, 83

Why are those the prime factors of the number 122,244,309?

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 122,244,309

122,244,309
Factor Arrows
340,748,103
Factor Arrows
313,582,701
Factor Arrows
34,527,567
Factor Arrows
31,509,189
Factor Arrows
3503,063
Factor Arrows
1145,733
Factor Arrows
192,407
Factor Arrows
2983

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, 11, 19, 29, 83

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 11 x 19 x 29 x 83 = 122,244,309

This can also be written as 35 x 111 x 191 x 291 x 831 = 122,244,309

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


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