Q: What are the prime factors of the number 190,512?

 A: 2, 3, 7

Why are those the prime factors of the number 190,512?

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 190,512

190,512
Factor Arrows
295,256
Factor Arrows
247,628
Factor Arrows
223,814
Factor Arrows
211,907
Factor Arrows
33,969
Factor Arrows
31,323
Factor Arrows
3441
Factor Arrows
3147
Factor Arrows
349
Factor Arrows
77

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, 7

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 7 x 7 = 190,512

This can also be written as 24 x 35 x 72 = 190,512

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


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