Q: What are the prime factors of the number 123,262,178?

 A: 2, 13, 67, 5443

Why are those the prime factors of the number 123,262,178?

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 123,262,178

123,262,178
Factor Arrows
261,631,089
Factor Arrows
134,740,853
Factor Arrows
13364,681
Factor Arrows
675,443

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, 13, 67, 5443

We can check our work by multiplying all of the prime factors together: 2 x 13 x 13 x 67 x 5,443 = 123,262,178

This can also be written as 21 x 132 x 671 x 5,4431 = 123,262,178

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


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