Q: What are the prime factors of the number 1,312,512?

 A: 2, 3, 1709

Why are those the prime factors of the number 1,312,512?

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 1,312,512

1,312,512
Factor Arrows
2656,256
Factor Arrows
2328,128
Factor Arrows
2164,064
Factor Arrows
282,032
Factor Arrows
241,016
Factor Arrows
220,508
Factor Arrows
210,254
Factor Arrows
25,127
Factor Arrows
31,709

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, 1709

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 3 x 1,709 = 1,312,512

This can also be written as 28 x 31 x 1,7091 = 1,312,512

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


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