Q: What are the prime factors of the number 258,265,105?

 A: 5, 7, 17, 277, 1567

Why are those the prime factors of the number 258,265,105?

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 258,265,105

258,265,105
Factor Arrows
551,653,021
Factor Arrows
77,379,003
Factor Arrows
17434,059
Factor Arrows
2771,567

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:

5, 7, 17, 277, 1567

We can check our work by multiplying all of the prime factors together: 5 x 7 x 17 x 277 x 1,567 = 258,265,105

This can also be written as 51 x 71 x 171 x 2771 x 1,5671 = 258,265,105

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


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