Q: What are the prime factors of the number 1,205,976?

 A: 2, 3, 109, 461

Why are those the prime factors of the number 1,205,976?

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 1,205,976

1,205,976
Factor Arrows
2602,988
Factor Arrows
2301,494
Factor Arrows
2150,747
Factor Arrows
350,249
Factor Arrows
109461

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, 109, 461

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 109 x 461 = 1,205,976

This can also be written as 23 x 31 x 1091 x 4611 = 1,205,976

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


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