Q: What are the prime factors of the number 33,105,625?

 A: 5, 7, 23, 47

Why are those the prime factors of the number 33,105,625?

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 33,105,625

33,105,625
Factor Arrows
56,621,125
Factor Arrows
51,324,225
Factor Arrows
5264,845
Factor Arrows
552,969
Factor Arrows
77,567
Factor Arrows
71,081
Factor Arrows
2347

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, 23, 47

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 7 x 7 x 23 x 47 = 33,105,625

This can also be written as 54 x 72 x 231 x 471 = 33,105,625

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


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