Q: What are the prime factors of the number 51,011,328?

 A: 2, 3, 127, 523

Why are those the prime factors of the number 51,011,328?

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 51,011,328

51,011,328
Factor Arrows
225,505,664
Factor Arrows
212,752,832
Factor Arrows
26,376,416
Factor Arrows
23,188,208
Factor Arrows
21,594,104
Factor Arrows
2797,052
Factor Arrows
2398,526
Factor Arrows
2199,263
Factor Arrows
366,421
Factor Arrows
127523

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, 127, 523

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 3 x 127 x 523 = 51,011,328

This can also be written as 28 x 31 x 1271 x 5231 = 51,011,328

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


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