Q: What are the prime factors of the number 2,257,216?

 A: 2, 13, 2713

Why are those the prime factors of the number 2,257,216?

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 2,257,216

2,257,216
Factor Arrows
21,128,608
Factor Arrows
2564,304
Factor Arrows
2282,152
Factor Arrows
2141,076
Factor Arrows
270,538
Factor Arrows
235,269
Factor Arrows
132,713

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, 13, 2713

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 13 x 2,713 = 2,257,216

This can also be written as 26 x 131 x 2,7131 = 2,257,216

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


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