Q: What are the prime factors of the number 77,580,832?

 A: 2, 7, 47, 7369

Why are those the prime factors of the number 77,580,832?

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 77,580,832

77,580,832
Factor Arrows
238,790,416
Factor Arrows
219,395,208
Factor Arrows
29,697,604
Factor Arrows
24,848,802
Factor Arrows
22,424,401
Factor Arrows
7346,343
Factor Arrows
477,369

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, 7, 47, 7369

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 47 x 7,369 = 77,580,832

This can also be written as 25 x 71 x 471 x 7,3691 = 77,580,832

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


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