Q: What are the prime factors of the number 123,566,355?

 A: 3, 5, 11, 59, 4231

Why are those the prime factors of the number 123,566,355?

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 123,566,355

123,566,355
Factor Arrows
341,188,785
Factor Arrows
313,729,595
Factor Arrows
52,745,919
Factor Arrows
11249,629
Factor Arrows
594,231

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, 11, 59, 4231

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 11 x 59 x 4,231 = 123,566,355

This can also be written as 32 x 51 x 111 x 591 x 4,2311 = 123,566,355

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


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