Q: What are the prime factors of the number 1,312,256?

 A: 2, 11, 233

Why are those the prime factors of the number 1,312,256?

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 1,312,256

1,312,256
Factor Arrows
2656,128
Factor Arrows
2328,064
Factor Arrows
2164,032
Factor Arrows
282,016
Factor Arrows
241,008
Factor Arrows
220,504
Factor Arrows
210,252
Factor Arrows
25,126
Factor Arrows
22,563
Factor Arrows
11233

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, 11, 233

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 11 x 233 = 1,312,256

This can also be written as 29 x 111 x 2331 = 1,312,256

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


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