Q: What are the prime factors of the number 617,155?

 A: 5, 7, 11, 229

Why are those the prime factors of the number 617,155?

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 617,155

617,155
Factor Arrows
5123,431
Factor Arrows
717,633
Factor Arrows
72,519
Factor Arrows
11229

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, 11, 229

We can check our work by multiplying all of the prime factors together: 5 x 7 x 7 x 11 x 229 = 617,155

This can also be written as 51 x 72 x 111 x 2291 = 617,155

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


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