Q: What are the prime factors of the number 18,348,444?

 A: 2, 3, 43, 439

Why are those the prime factors of the number 18,348,444?

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 18,348,444

18,348,444
Factor Arrows
29,174,222
Factor Arrows
24,587,111
Factor Arrows
31,529,037
Factor Arrows
3509,679
Factor Arrows
3169,893
Factor Arrows
356,631
Factor Arrows
318,877
Factor Arrows
43439

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, 43, 439

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 43 x 439 = 18,348,444

This can also be written as 22 x 35 x 431 x 4391 = 18,348,444

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


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