Q: What are the prime factors of the number 76,161,536?

 A: 2, 11, 13523

Why are those the prime factors of the number 76,161,536?

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 76,161,536

76,161,536
Factor Arrows
238,080,768
Factor Arrows
219,040,384
Factor Arrows
29,520,192
Factor Arrows
24,760,096
Factor Arrows
22,380,048
Factor Arrows
21,190,024
Factor Arrows
2595,012
Factor Arrows
2297,506
Factor Arrows
2148,753
Factor Arrows
1113,523

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, 11, 13523

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 2 x 2 x 2 x 11 x 13,523 = 76,161,536

This can also be written as 29 x 111 x 13,5231 = 76,161,536

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


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