Q: What are the prime factors of the number 77,576,736?

 A: 2, 3, 53, 79, 193

Why are those the prime factors of the number 77,576,736?

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 77,576,736

77,576,736
Factor Arrows
238,788,368
Factor Arrows
219,394,184
Factor Arrows
29,697,092
Factor Arrows
24,848,546
Factor Arrows
22,424,273
Factor Arrows
3808,091
Factor Arrows
5315,247
Factor Arrows
79193

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, 53, 79, 193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 53 x 79 x 193 = 77,576,736

This can also be written as 25 x 31 x 531 x 791 x 1931 = 77,576,736

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


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