Q: What are the prime factors of the number 190,899,324?

 A: 2, 3, 7, 11, 17, 4051

Why are those the prime factors of the number 190,899,324?

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 190,899,324

190,899,324
Factor Arrows
295,449,662
Factor Arrows
247,724,831
Factor Arrows
315,908,277
Factor Arrows
35,302,759
Factor Arrows
7757,537
Factor Arrows
1168,867
Factor Arrows
174,051

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, 11, 17, 4051

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 11 x 17 x 4,051 = 190,899,324

This can also be written as 22 x 32 x 71 x 111 x 171 x 4,0511 = 190,899,324

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


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