Q: What are the prime factors of the number 124,125,313?

 A: 13, 17, 457, 1229

Why are those the prime factors of the number 124,125,313?

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 124,125,313

124,125,313
Factor Arrows
139,548,101
Factor Arrows
17561,653
Factor Arrows
4571,229

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:

13, 17, 457, 1229

We can check our work by multiplying all of the prime factors together: 13 x 17 x 457 x 1,229 = 124,125,313

This can also be written as 131 x 171 x 4571 x 1,2291 = 124,125,313

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


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