Q: What are the prime factors of the number 1,388,192?

 A: 2, 13, 47, 71

Why are those the prime factors of the number 1,388,192?

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 1,388,192

1,388,192
Factor Arrows
2694,096
Factor Arrows
2347,048
Factor Arrows
2173,524
Factor Arrows
286,762
Factor Arrows
243,381
Factor Arrows
133,337
Factor Arrows
4771

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, 47, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 13 x 47 x 71 = 1,388,192

This can also be written as 25 x 131 x 471 x 711 = 1,388,192

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


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