Q: What are the prime factors of the number 26,390,016?

 A: 2, 3, 23, 83

Why are those the prime factors of the number 26,390,016?

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 26,390,016

26,390,016
Factor Arrows
213,195,008
Factor Arrows
26,597,504
Factor Arrows
23,298,752
Factor Arrows
21,649,376
Factor Arrows
2824,688
Factor Arrows
2412,344
Factor Arrows
2206,172
Factor Arrows
2103,086
Factor Arrows
251,543
Factor Arrows
317,181
Factor Arrows
35,727
Factor Arrows
31,909
Factor Arrows
2383

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, 23, 83

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 23 x 83 = 26,390,016

This can also be written as 29 x 33 x 231 x 831 = 26,390,016

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


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