Q: What are the prime factors of the number 628,764?

 A: 2, 3, 151, 347

Why are those the prime factors of the number 628,764?

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 628,764

628,764
Factor Arrows
2314,382
Factor Arrows
2157,191
Factor Arrows
352,397
Factor Arrows
151347

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, 151, 347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 151 x 347 = 628,764

This can also be written as 22 x 31 x 1511 x 3471 = 628,764

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


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