Q: What are the prime factors of the number 7,847,936?

 A: 2, 479

Why are those the prime factors of the number 7,847,936?

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 7,847,936

7,847,936
Factor Arrows
23,923,968
Factor Arrows
21,961,984
Factor Arrows
2980,992
Factor Arrows
2490,496
Factor Arrows
2245,248
Factor Arrows
2122,624
Factor Arrows
261,312
Factor Arrows
230,656
Factor Arrows
215,328
Factor Arrows
27,664
Factor Arrows
23,832
Factor Arrows
21,916
Factor Arrows
2958
Factor Arrows
2479

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, 479

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 2 x 2 x 2 x 2 x 2 x 479 = 7,847,936

This can also be written as 214 x 4791 = 7,847,936

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


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