Q: What are the prime factors of the number 40,134,432?

 A: 2, 3, 13, 32159

Why are those the prime factors of the number 40,134,432?

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 40,134,432

40,134,432
Factor Arrows
220,067,216
Factor Arrows
210,033,608
Factor Arrows
25,016,804
Factor Arrows
22,508,402
Factor Arrows
21,254,201
Factor Arrows
3418,067
Factor Arrows
1332,159

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, 13, 32159

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 13 x 32,159 = 40,134,432

This can also be written as 25 x 31 x 131 x 32,1591 = 40,134,432

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


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