Q: What are the prime factors of the number 2,198,016?

 A: 2, 3, 53

Why are those the prime factors of the number 2,198,016?

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 2,198,016

2,198,016
Factor Arrows
21,099,008
Factor Arrows
2549,504
Factor Arrows
2274,752
Factor Arrows
2137,376
Factor Arrows
268,688
Factor Arrows
234,344
Factor Arrows
217,172
Factor Arrows
28,586
Factor Arrows
24,293
Factor Arrows
31,431
Factor Arrows
3477
Factor Arrows
3159
Factor Arrows
353

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, 53

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 3 x 53 = 2,198,016

This can also be written as 29 x 34 x 531 = 2,198,016

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


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