Q: What are the prime factors of the number 1,661,002?

 A: 2, 7, 17, 997

Why are those the prime factors of the number 1,661,002?

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 1,661,002

1,661,002
Factor Arrows
2830,501
Factor Arrows
7118,643
Factor Arrows
716,949
Factor Arrows
17997

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, 17, 997

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 17 x 997 = 1,661,002

This can also be written as 21 x 72 x 171 x 9971 = 1,661,002

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


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