Q: What are the prime factors of the number 5,185,152?

 A: 2, 3, 7, 643

Why are those the prime factors of the number 5,185,152?

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 5,185,152

5,185,152
Factor Arrows
22,592,576
Factor Arrows
21,296,288
Factor Arrows
2648,144
Factor Arrows
2324,072
Factor Arrows
2162,036
Factor Arrows
281,018
Factor Arrows
240,509
Factor Arrows
313,503
Factor Arrows
34,501
Factor Arrows
7643

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, 643

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 3 x 3 x 7 x 643 = 5,185,152

This can also be written as 27 x 32 x 71 x 6431 = 5,185,152

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


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