Q: What are the prime factors of the number 7,856,992?

 A: 2, 11, 13, 17, 101

Why are those the prime factors of the number 7,856,992?

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 7,856,992

7,856,992
Factor Arrows
23,928,496
Factor Arrows
21,964,248
Factor Arrows
2982,124
Factor Arrows
2491,062
Factor Arrows
2245,531
Factor Arrows
1122,321
Factor Arrows
131,717
Factor Arrows
17101

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, 13, 17, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 13 x 17 x 101 = 7,856,992

This can also be written as 25 x 111 x 131 x 171 x 1011 = 7,856,992

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


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