Q: What are the prime factors of the number 124,123,605?

 A: 3, 5, 41, 201827

Why are those the prime factors of the number 124,123,605?

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 124,123,605

124,123,605
Factor Arrows
341,374,535
Factor Arrows
58,274,907
Factor Arrows
41201,827

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, 5, 41, 201827

We can check our work by multiplying all of the prime factors together: 3 x 5 x 41 x 201,827 = 124,123,605

This can also be written as 31 x 51 x 411 x 201,8271 = 124,123,605

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


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