Q: What are the prime factors of the number 2,205,750?

 A: 2, 3, 5, 17, 173

Why are those the prime factors of the number 2,205,750?

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 2,205,750

2,205,750
Factor Arrows
21,102,875
Factor Arrows
3367,625
Factor Arrows
573,525
Factor Arrows
514,705
Factor Arrows
52,941
Factor Arrows
17173

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:

2, 3, 5, 17, 173

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 5 x 17 x 173 = 2,205,750

This can also be written as 21 x 31 x 53 x 171 x 1731 = 2,205,750

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


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