Q: What are the prime factors of the number 77,505,600?

 A: 2, 3, 5, 67, 241

Why are those the prime factors of the number 77,505,600?

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 77,505,600

77,505,600
Factor Arrows
238,752,800
Factor Arrows
219,376,400
Factor Arrows
29,688,200
Factor Arrows
24,844,100
Factor Arrows
22,422,050
Factor Arrows
21,211,025
Factor Arrows
3403,675
Factor Arrows
580,735
Factor Arrows
516,147
Factor Arrows
67241

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, 5, 67, 241

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 5 x 5 x 67 x 241 = 77,505,600

This can also be written as 26 x 31 x 52 x 671 x 2411 = 77,505,600

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


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