Q: What are the prime factors of the number 2,245,152?

 A: 2, 3, 7, 13, 257

Why are those the prime factors of the number 2,245,152?

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 2,245,152

2,245,152
Factor Arrows
21,122,576
Factor Arrows
2561,288
Factor Arrows
2280,644
Factor Arrows
2140,322
Factor Arrows
270,161
Factor Arrows
323,387
Factor Arrows
73,341
Factor Arrows
13257

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, 7, 13, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 13 x 257 = 2,245,152

This can also be written as 25 x 31 x 71 x 131 x 2571 = 2,245,152

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


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