Q: What are the prime factors of the number 51,116,156?

 A: 2, 7, 13, 19, 389

Why are those the prime factors of the number 51,116,156?

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 51,116,156

51,116,156
Factor Arrows
225,558,078
Factor Arrows
212,779,039
Factor Arrows
71,825,577
Factor Arrows
13140,429
Factor Arrows
197,391
Factor Arrows
19389

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, 7, 13, 19, 389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 13 x 19 x 19 x 389 = 51,116,156

This can also be written as 22 x 71 x 131 x 192 x 3891 = 51,116,156

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


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