Q: What are the prime factors of the number 1,294,976?

 A: 2, 67, 151

Why are those the prime factors of the number 1,294,976?

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 1,294,976

1,294,976
Factor Arrows
2647,488
Factor Arrows
2323,744
Factor Arrows
2161,872
Factor Arrows
280,936
Factor Arrows
240,468
Factor Arrows
220,234
Factor Arrows
210,117
Factor Arrows
67151

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, 67, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 67 x 151 = 1,294,976

This can also be written as 27 x 671 x 1511 = 1,294,976

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


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