Q: What are the prime factors of the number 655,155?

 A: 3, 5, 23, 211

Why are those the prime factors of the number 655,155?

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 655,155

655,155
Factor Arrows
3218,385
Factor Arrows
372,795
Factor Arrows
324,265
Factor Arrows
54,853
Factor Arrows
23211

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, 23, 211

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 23 x 211 = 655,155

This can also be written as 33 x 51 x 231 x 2111 = 655,155

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


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