Q: What are the prime factors of the number 18,442,900?

 A: 2, 5, 7, 26347

Why are those the prime factors of the number 18,442,900?

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 18,442,900

18,442,900
Factor Arrows
29,221,450
Factor Arrows
24,610,725
Factor Arrows
5922,145
Factor Arrows
5184,429
Factor Arrows
726,347

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, 7, 26347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 26,347 = 18,442,900

This can also be written as 22 x 52 x 71 x 26,3471 = 18,442,900

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


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