Q: What are the prime factors of the number 55,251,456?

 A: 2, 3, 13, 2767

Why are those the prime factors of the number 55,251,456?

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 55,251,456

55,251,456
Factor Arrows
227,625,728
Factor Arrows
213,812,864
Factor Arrows
26,906,432
Factor Arrows
23,453,216
Factor Arrows
21,726,608
Factor Arrows
2863,304
Factor Arrows
2431,652
Factor Arrows
2215,826
Factor Arrows
2107,913
Factor Arrows
335,971
Factor Arrows
132,767

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, 13, 2767

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 2 x 3 x 13 x 2,767 = 55,251,456

This can also be written as 29 x 31 x 131 x 2,7671 = 55,251,456

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


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