Q: What are the prime factors of the number 31,250,432?

 A: 2, 15259

Why are those the prime factors of the number 31,250,432?

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 31,250,432

31,250,432
Factor Arrows
215,625,216
Factor Arrows
27,812,608
Factor Arrows
23,906,304
Factor Arrows
21,953,152
Factor Arrows
2976,576
Factor Arrows
2488,288
Factor Arrows
2244,144
Factor Arrows
2122,072
Factor Arrows
261,036
Factor Arrows
230,518
Factor Arrows
215,259

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, 15259

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 2 x 2 x 2 x 15,259 = 31,250,432

This can also be written as 211 x 15,2591 = 31,250,432

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


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