Q: What are the prime factors of the number 8,153,856?

 A: 2, 3, 3539

Why are those the prime factors of the number 8,153,856?

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 8,153,856

8,153,856
Factor Arrows
24,076,928
Factor Arrows
22,038,464
Factor Arrows
21,019,232
Factor Arrows
2509,616
Factor Arrows
2254,808
Factor Arrows
2127,404
Factor Arrows
263,702
Factor Arrows
231,851
Factor Arrows
310,617
Factor Arrows
33,539

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, 3539

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 3 x 3 x 3,539 = 8,153,856

This can also be written as 28 x 32 x 3,5391 = 8,153,856

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


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