Q: What are the prime factors of the number 11,643,136?

 A: 2, 45481

Why are those the prime factors of the number 11,643,136?

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 11,643,136

11,643,136
Factor Arrows
25,821,568
Factor Arrows
22,910,784
Factor Arrows
21,455,392
Factor Arrows
2727,696
Factor Arrows
2363,848
Factor Arrows
2181,924
Factor Arrows
290,962
Factor Arrows
245,481

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, 45481

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 45,481 = 11,643,136

This can also be written as 28 x 45,4811 = 11,643,136

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


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