Q: What are the prime factors of the number 77,430,112?

 A: 2, 79, 109, 281

Why are those the prime factors of the number 77,430,112?

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 77,430,112

77,430,112
Factor Arrows
238,715,056
Factor Arrows
219,357,528
Factor Arrows
29,678,764
Factor Arrows
24,839,382
Factor Arrows
22,419,691
Factor Arrows
7930,629
Factor Arrows
109281

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, 79, 109, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 79 x 109 x 281 = 77,430,112

This can also be written as 25 x 791 x 1091 x 2811 = 77,430,112

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


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