Q: What are the prime factors of the number 642,036?

 A: 2, 3, 53503

Why are those the prime factors of the number 642,036?

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 642,036

642,036
Factor Arrows
2321,018
Factor Arrows
2160,509
Factor Arrows
353,503

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, 53503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 53,503 = 642,036

This can also be written as 22 x 31 x 53,5031 = 642,036

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


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