Q: What are the prime factors of the number 91,356,304?

 A: 2, 13, 257, 1709

Why are those the prime factors of the number 91,356,304?

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 91,356,304

91,356,304
Factor Arrows
245,678,152
Factor Arrows
222,839,076
Factor Arrows
211,419,538
Factor Arrows
25,709,769
Factor Arrows
13439,213
Factor Arrows
2571,709

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, 13, 257, 1709

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 257 x 1,709 = 91,356,304

This can also be written as 24 x 131 x 2571 x 1,7091 = 91,356,304

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


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