Q: What are the prime factors of the number 18,897,192?

 A: 2, 3, 89, 983

Why are those the prime factors of the number 18,897,192?

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 18,897,192

18,897,192
Factor Arrows
29,448,596
Factor Arrows
24,724,298
Factor Arrows
22,362,149
Factor Arrows
3787,383
Factor Arrows
3262,461
Factor Arrows
387,487
Factor Arrows
89983

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, 89, 983

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 89 x 983 = 18,897,192

This can also be written as 23 x 33 x 891 x 9831 = 18,897,192

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


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