Q: What are the prime factors of the number 641,088?

 A: 2, 3, 7, 53

Why are those the prime factors of the number 641,088?

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 641,088

641,088
Factor Arrows
2320,544
Factor Arrows
2160,272
Factor Arrows
280,136
Factor Arrows
240,068
Factor Arrows
220,034
Factor Arrows
210,017
Factor Arrows
33,339
Factor Arrows
31,113
Factor Arrows
3371
Factor Arrows
753

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, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 7 x 53 = 641,088

This can also be written as 26 x 33 x 71 x 531 = 641,088

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


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