Q: What are the prime factors of the number 1,228,768?

 A: 2, 19, 43, 47

Why are those the prime factors of the number 1,228,768?

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 1,228,768

1,228,768
Factor Arrows
2614,384
Factor Arrows
2307,192
Factor Arrows
2153,596
Factor Arrows
276,798
Factor Arrows
238,399
Factor Arrows
192,021
Factor Arrows
4347

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, 19, 43, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 19 x 43 x 47 = 1,228,768

This can also be written as 25 x 191 x 431 x 471 = 1,228,768

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


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