Q: What are the prime factors of the number 661,758?

 A: 2, 3, 53, 2081

Why are those the prime factors of the number 661,758?

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 661,758

661,758
Factor Arrows
2330,879
Factor Arrows
3110,293
Factor Arrows
532,081

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, 53, 2081

We can check our work by multiplying all of the prime factors together: 2 x 3 x 53 x 2,081 = 661,758

This can also be written as 21 x 31 x 531 x 2,0811 = 661,758

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


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