Q: What are the prime factors of the number 126,421,032?

 A: 2, 3, 43, 122501

Why are those the prime factors of the number 126,421,032?

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 126,421,032

126,421,032
Factor Arrows
263,210,516
Factor Arrows
231,605,258
Factor Arrows
215,802,629
Factor Arrows
35,267,543
Factor Arrows
43122,501

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, 43, 122501

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 43 x 122,501 = 126,421,032

This can also be written as 23 x 31 x 431 x 122,5011 = 126,421,032

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


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