Q: What are the prime factors of the number 38,975,328?

 A: 2, 3, 7, 19333

Why are those the prime factors of the number 38,975,328?

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 38,975,328

38,975,328
Factor Arrows
219,487,664
Factor Arrows
29,743,832
Factor Arrows
24,871,916
Factor Arrows
22,435,958
Factor Arrows
21,217,979
Factor Arrows
3405,993
Factor Arrows
3135,331
Factor Arrows
719,333

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, 19333

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 19,333 = 38,975,328

This can also be written as 25 x 32 x 71 x 19,3331 = 38,975,328

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


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