Q: What are the prime factors of the number 1,627,648?

 A: 2, 11, 17

Why are those the prime factors of the number 1,627,648?

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 1,627,648

1,627,648
Factor Arrows
2813,824
Factor Arrows
2406,912
Factor Arrows
2203,456
Factor Arrows
2101,728
Factor Arrows
250,864
Factor Arrows
225,432
Factor Arrows
212,716
Factor Arrows
26,358
Factor Arrows
23,179
Factor Arrows
11289
Factor Arrows
1717

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, 17

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 17 x 17 = 1,627,648

This can also be written as 29 x 111 x 172 = 1,627,648

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


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