Q: What are the prime factors of the number 1,690,032?

 A: 2, 3, 137, 257

Why are those the prime factors of the number 1,690,032?

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 1,690,032

1,690,032
Factor Arrows
2845,016
Factor Arrows
2422,508
Factor Arrows
2211,254
Factor Arrows
2105,627
Factor Arrows
335,209
Factor Arrows
137257

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, 137, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 137 x 257 = 1,690,032

This can also be written as 24 x 31 x 1371 x 2571 = 1,690,032

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


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