Q: What are the prime factors of the number 577,318?

 A: 2, 7, 43, 137

Why are those the prime factors of the number 577,318?

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 577,318

577,318
Factor Arrows
2288,659
Factor Arrows
741,237
Factor Arrows
75,891
Factor Arrows
43137

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, 7, 43, 137

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 43 x 137 = 577,318

This can also be written as 21 x 72 x 431 x 1371 = 577,318

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


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