Q: What are the prime factors of the number 1,366,976?

 A: 2, 13, 31, 53

Why are those the prime factors of the number 1,366,976?

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 1,366,976

1,366,976
Factor Arrows
2683,488
Factor Arrows
2341,744
Factor Arrows
2170,872
Factor Arrows
285,436
Factor Arrows
242,718
Factor Arrows
221,359
Factor Arrows
131,643
Factor Arrows
3153

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, 13, 31, 53

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 13 x 31 x 53 = 1,366,976

This can also be written as 26 x 131 x 311 x 531 = 1,366,976

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


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