Q: What are the prime factors of the number 2,661,246?

 A: 2, 3, 7, 21121

Why are those the prime factors of the number 2,661,246?

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 2,661,246

2,661,246
Factor Arrows
21,330,623
Factor Arrows
3443,541
Factor Arrows
3147,847
Factor Arrows
721,121

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, 21121

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 21,121 = 2,661,246

This can also be written as 21 x 32 x 71 x 21,1211 = 2,661,246

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


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