Q: What are the prime factors of the number 51,145,312?

 A: 2, 179, 8929

Why are those the prime factors of the number 51,145,312?

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 51,145,312

51,145,312
Factor Arrows
225,572,656
Factor Arrows
212,786,328
Factor Arrows
26,393,164
Factor Arrows
23,196,582
Factor Arrows
21,598,291
Factor Arrows
1798,929

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, 179, 8929

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 179 x 8,929 = 51,145,312

This can also be written as 25 x 1791 x 8,9291 = 51,145,312

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


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