Q: What are the prime factors of the number 123,113,211?

 A: 3, 13, 109, 28961

Why are those the prime factors of the number 123,113,211?

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 123,113,211

123,113,211
Factor Arrows
341,037,737
Factor Arrows
133,156,749
Factor Arrows
10928,961

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, 13, 109, 28961

We can check our work by multiplying all of the prime factors together: 3 x 13 x 109 x 28,961 = 123,113,211

This can also be written as 31 x 131 x 1091 x 28,9611 = 123,113,211

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


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