Q: What are the prime factors of the number 1,647,488?

 A: 2, 61, 211

Why are those the prime factors of the number 1,647,488?

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 1,647,488

1,647,488
Factor Arrows
2823,744
Factor Arrows
2411,872
Factor Arrows
2205,936
Factor Arrows
2102,968
Factor Arrows
251,484
Factor Arrows
225,742
Factor Arrows
212,871
Factor Arrows
61211

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, 61, 211

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 61 x 211 = 1,647,488

This can also be written as 27 x 611 x 2111 = 1,647,488

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


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