Q: What are the prime factors of the number 51,122,304?

 A: 2, 3, 199, 223

Why are those the prime factors of the number 51,122,304?

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 51,122,304

51,122,304
Factor Arrows
225,561,152
Factor Arrows
212,780,576
Factor Arrows
26,390,288
Factor Arrows
23,195,144
Factor Arrows
21,597,572
Factor Arrows
2798,786
Factor Arrows
2399,393
Factor Arrows
3133,131
Factor Arrows
344,377
Factor Arrows
199223

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, 199, 223

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 3 x 3 x 199 x 223 = 51,122,304

This can also be written as 27 x 32 x 1991 x 2231 = 51,122,304

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


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