Q: What are the prime factors of the number 1,808,325?

 A: 3, 5, 19, 47

Why are those the prime factors of the number 1,808,325?

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 1,808,325

1,808,325
Factor Arrows
3602,775
Factor Arrows
3200,925
Factor Arrows
366,975
Factor Arrows
322,325
Factor Arrows
54,465
Factor Arrows
5893
Factor Arrows
1947

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:

3, 5, 19, 47

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 5 x 19 x 47 = 1,808,325

This can also be written as 34 x 52 x 191 x 471 = 1,808,325

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


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