Q: What are the prime factors of the number 5,073,152?

 A: 2, 7, 19, 149

Why are those the prime factors of the number 5,073,152?

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 5,073,152

5,073,152
Factor Arrows
22,536,576
Factor Arrows
21,268,288
Factor Arrows
2634,144
Factor Arrows
2317,072
Factor Arrows
2158,536
Factor Arrows
279,268
Factor Arrows
239,634
Factor Arrows
219,817
Factor Arrows
72,831
Factor Arrows
19149

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, 7, 19, 149

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 7 x 19 x 149 = 5,073,152

This can also be written as 28 x 71 x 191 x 1491 = 5,073,152

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


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