Q: What are the prime factors of the number 1,647,108?

 A: 2, 3, 101, 151

Why are those the prime factors of the number 1,647,108?

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 1,647,108

1,647,108
Factor Arrows
2823,554
Factor Arrows
2411,777
Factor Arrows
3137,259
Factor Arrows
345,753
Factor Arrows
315,251
Factor Arrows
101151

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, 101, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 101 x 151 = 1,647,108

This can also be written as 22 x 33 x 1011 x 1511 = 1,647,108

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


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