Q: What are the prime factors of the number 123,762,470?

 A: 2, 5, 13, 173, 5503

Why are those the prime factors of the number 123,762,470?

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 123,762,470

123,762,470
Factor Arrows
261,881,235
Factor Arrows
512,376,247
Factor Arrows
13952,019
Factor Arrows
1735,503

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:

2, 5, 13, 173, 5503

We can check our work by multiplying all of the prime factors together: 2 x 5 x 13 x 173 x 5,503 = 123,762,470

This can also be written as 21 x 51 x 131 x 1731 x 5,5031 = 123,762,470

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


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