Q: What are the prime factors of the number 1,320,312?

 A: 2, 3, 7, 29, 271

Why are those the prime factors of the number 1,320,312?

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 1,320,312

1,320,312
Factor Arrows
2660,156
Factor Arrows
2330,078
Factor Arrows
2165,039
Factor Arrows
355,013
Factor Arrows
77,859
Factor Arrows
29271

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, 29, 271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 29 x 271 = 1,320,312

This can also be written as 23 x 31 x 71 x 291 x 2711 = 1,320,312

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


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