Q: What are the prime factors of the number 2,257,152?

 A: 2, 3, 2939

Why are those the prime factors of the number 2,257,152?

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 2,257,152

2,257,152
Factor Arrows
21,128,576
Factor Arrows
2564,288
Factor Arrows
2282,144
Factor Arrows
2141,072
Factor Arrows
270,536
Factor Arrows
235,268
Factor Arrows
217,634
Factor Arrows
28,817
Factor Arrows
32,939

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, 2939

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 3 x 2,939 = 2,257,152

This can also be written as 28 x 31 x 2,9391 = 2,257,152

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


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