Q: What are the prime factors of the number 90,380?

 A: 2, 5, 4519

Why are those the prime factors of the number 90,380?

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 90,380

90,380
Factor Arrows
245,190
Factor Arrows
222,595
Factor Arrows
54,519

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, 5, 4519

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 4,519 = 90,380

This can also be written as 22 x 51 x 4,5191 = 90,380

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


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