Q: What are the prime factors of the number 1,886,304?

 A: 2, 3, 7, 401

Why are those the prime factors of the number 1,886,304?

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 1,886,304

1,886,304
Factor Arrows
2943,152
Factor Arrows
2471,576
Factor Arrows
2235,788
Factor Arrows
2117,894
Factor Arrows
258,947
Factor Arrows
319,649
Factor Arrows
72,807
Factor Arrows
7401

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, 7, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 7 x 401 = 1,886,304

This can also be written as 25 x 31 x 72 x 4011 = 1,886,304

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


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