Q: What are the prime factors of the number 124,343,205?

 A: 3, 5, 7, 593, 1997

Why are those the prime factors of the number 124,343,205?

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 124,343,205

124,343,205
Factor Arrows
341,447,735
Factor Arrows
58,289,547
Factor Arrows
71,184,221
Factor Arrows
5931,997

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, 7, 593, 1997

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 593 x 1,997 = 124,343,205

This can also be written as 31 x 51 x 71 x 5931 x 1,9971 = 124,343,205

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


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