Q: What are the prime factors of the number 120,747,375?

 A: 3, 5, 7, 19, 269

Why are those the prime factors of the number 120,747,375?

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 120,747,375

120,747,375
Factor Arrows
340,249,125
Factor Arrows
313,416,375
Factor Arrows
34,472,125
Factor Arrows
5894,425
Factor Arrows
5178,885
Factor Arrows
535,777
Factor Arrows
75,111
Factor Arrows
19269

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, 7, 19, 269

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 5 x 5 x 7 x 19 x 269 = 120,747,375

This can also be written as 33 x 53 x 71 x 191 x 2691 = 120,747,375

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


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