Q: What are the prime factors of the number 1,327,480?

 A: 2, 5, 7, 11, 431

Why are those the prime factors of the number 1,327,480?

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 1,327,480

1,327,480
Factor Arrows
2663,740
Factor Arrows
2331,870
Factor Arrows
2165,935
Factor Arrows
533,187
Factor Arrows
74,741
Factor Arrows
11431

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, 5, 7, 11, 431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 11 x 431 = 1,327,480

This can also be written as 23 x 51 x 71 x 111 x 4311 = 1,327,480

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


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