Q: What are the prime factors of the number 42,284,288?

 A: 2, 165173

Why are those the prime factors of the number 42,284,288?

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 42,284,288

42,284,288
Factor Arrows
221,142,144
Factor Arrows
210,571,072
Factor Arrows
25,285,536
Factor Arrows
22,642,768
Factor Arrows
21,321,384
Factor Arrows
2660,692
Factor Arrows
2330,346
Factor Arrows
2165,173

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, 165173

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 165,173 = 42,284,288

This can also be written as 28 x 165,1731 = 42,284,288

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


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