Q: What are the prime factors of the number 63,145,600?

 A: 2, 5, 7, 2819

Why are those the prime factors of the number 63,145,600?

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 63,145,600

63,145,600
Factor Arrows
231,572,800
Factor Arrows
215,786,400
Factor Arrows
27,893,200
Factor Arrows
23,946,600
Factor Arrows
21,973,300
Factor Arrows
2986,650
Factor Arrows
2493,325
Factor Arrows
598,665
Factor Arrows
519,733
Factor Arrows
72,819

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, 5, 7, 2819

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 5 x 5 x 7 x 2,819 = 63,145,600

This can also be written as 27 x 52 x 71 x 2,8191 = 63,145,600

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


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