Q: What are the prime factors of the number 431,024,100?

 A: 2, 3, 5, 13, 29, 37, 103

Why are those the prime factors of the number 431,024,100?

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 431,024,100

431,024,100
Factor Arrows
2215,512,050
Factor Arrows
2107,756,025
Factor Arrows
335,918,675
Factor Arrows
57,183,735
Factor Arrows
51,436,747
Factor Arrows
13110,519
Factor Arrows
293,811
Factor Arrows
37103

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, 5, 13, 29, 37, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 13 x 29 x 37 x 103 = 431,024,100

This can also be written as 22 x 31 x 52 x 131 x 291 x 371 x 1031 = 431,024,100

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


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