Q: What are the prime factors of the number 661,449?

 A: 3, 37, 59, 101

Why are those the prime factors of the number 661,449?

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 661,449

661,449
Factor Arrows
3220,483
Factor Arrows
375,959
Factor Arrows
59101

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:

3, 37, 59, 101

We can check our work by multiplying all of the prime factors together: 3 x 37 x 59 x 101 = 661,449

This can also be written as 31 x 371 x 591 x 1011 = 661,449

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


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