Q: What are the prime factors of the number 605,225,103?

 A: 3, 7, 61, 173, 2731

Why are those the prime factors of the number 605,225,103?

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 605,225,103

605,225,103
Factor Arrows
3201,741,701
Factor Arrows
728,820,243
Factor Arrows
61472,463
Factor Arrows
1732,731

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, 7, 61, 173, 2731

We can check our work by multiplying all of the prime factors together: 3 x 7 x 61 x 173 x 2,731 = 605,225,103

This can also be written as 31 x 71 x 611 x 1731 x 2,7311 = 605,225,103

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


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