Q: What are the prime factors of the number 77,818,224?

 A: 2, 3, 11, 19, 7757

Why are those the prime factors of the number 77,818,224?

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 77,818,224

77,818,224
Factor Arrows
238,909,112
Factor Arrows
219,454,556
Factor Arrows
29,727,278
Factor Arrows
24,863,639
Factor Arrows
31,621,213
Factor Arrows
11147,383
Factor Arrows
197,757

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, 11, 19, 7757

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 19 x 7,757 = 77,818,224

This can also be written as 24 x 31 x 111 x 191 x 7,7571 = 77,818,224

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


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