Q: What are the prime factors of the number 18,825,210?

 A: 2, 3, 5, 61, 127

Why are those the prime factors of the number 18,825,210?

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 18,825,210

18,825,210
Factor Arrows
29,412,605
Factor Arrows
33,137,535
Factor Arrows
31,045,845
Factor Arrows
3348,615
Factor Arrows
3116,205
Factor Arrows
338,735
Factor Arrows
57,747
Factor Arrows
61127

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, 5, 61, 127

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 5 x 61 x 127 = 18,825,210

This can also be written as 21 x 35 x 51 x 611 x 1271 = 18,825,210

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


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