Q: What are the prime factors of the number 431,344,536?

 A: 2, 3, 7, 17, 19, 7949

Why are those the prime factors of the number 431,344,536?

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 431,344,536

431,344,536
Factor Arrows
2215,672,268
Factor Arrows
2107,836,134
Factor Arrows
253,918,067
Factor Arrows
317,972,689
Factor Arrows
72,567,527
Factor Arrows
17151,031
Factor Arrows
197,949

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, 17, 19, 7949

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 17 x 19 x 7,949 = 431,344,536

This can also be written as 23 x 31 x 71 x 171 x 191 x 7,9491 = 431,344,536

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


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