Q: What are the prime factors of the number 51,420,384?

 A: 2, 3, 19, 9397

Why are those the prime factors of the number 51,420,384?

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 51,420,384

51,420,384
Factor Arrows
225,710,192
Factor Arrows
212,855,096
Factor Arrows
26,427,548
Factor Arrows
23,213,774
Factor Arrows
21,606,887
Factor Arrows
3535,629
Factor Arrows
3178,543
Factor Arrows
199,397

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, 19, 9397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 19 x 9,397 = 51,420,384

This can also be written as 25 x 32 x 191 x 9,3971 = 51,420,384

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


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