Q: What are the prime factors of the number 1,311,232?

 A: 2, 13, 197

Why are those the prime factors of the number 1,311,232?

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 1,311,232

1,311,232
Factor Arrows
2655,616
Factor Arrows
2327,808
Factor Arrows
2163,904
Factor Arrows
281,952
Factor Arrows
240,976
Factor Arrows
220,488
Factor Arrows
210,244
Factor Arrows
25,122
Factor Arrows
22,561
Factor Arrows
13197

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, 197

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 2 x 2 x 13 x 197 = 1,311,232

This can also be written as 29 x 131 x 1971 = 1,311,232

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


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