Q: What are the prime factors of the number 1,856,925?

 A: 3, 5, 7, 131

Why are those the prime factors of the number 1,856,925?

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 1,856,925

1,856,925
Factor Arrows
3618,975
Factor Arrows
3206,325
Factor Arrows
368,775
Factor Arrows
322,925
Factor Arrows
54,585
Factor Arrows
5917
Factor Arrows
7131

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, 7, 131

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 7 x 131 = 1,856,925

This can also be written as 34 x 52 x 71 x 1311 = 1,856,925

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


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