Q: What are the prime factors of the number 34,542,144?

 A: 2, 3, 7, 13, 659

Why are those the prime factors of the number 34,542,144?

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 34,542,144

34,542,144
Factor Arrows
217,271,072
Factor Arrows
28,635,536
Factor Arrows
24,317,768
Factor Arrows
22,158,884
Factor Arrows
21,079,442
Factor Arrows
2539,721
Factor Arrows
3179,907
Factor Arrows
359,969
Factor Arrows
78,567
Factor Arrows
13659

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, 13, 659

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 3 x 3 x 7 x 13 x 659 = 34,542,144

This can also be written as 26 x 32 x 71 x 131 x 6591 = 34,542,144

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


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