Q: What are the prime factors of the number 18,895,600?

 A: 2, 5, 97, 487

Why are those the prime factors of the number 18,895,600?

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 18,895,600

18,895,600
Factor Arrows
29,447,800
Factor Arrows
24,723,900
Factor Arrows
22,361,950
Factor Arrows
21,180,975
Factor Arrows
5236,195
Factor Arrows
547,239
Factor Arrows
97487

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, 5, 97, 487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 97 x 487 = 18,895,600

This can also be written as 24 x 52 x 971 x 4871 = 18,895,600

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


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