Q: What are the prime factors of the number 55,560,128?

 A: 2, 13, 43, 1553

Why are those the prime factors of the number 55,560,128?

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 55,560,128

55,560,128
Factor Arrows
227,780,064
Factor Arrows
213,890,032
Factor Arrows
26,945,016
Factor Arrows
23,472,508
Factor Arrows
21,736,254
Factor Arrows
2868,127
Factor Arrows
1366,779
Factor Arrows
431,553

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, 13, 43, 1553

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 13 x 43 x 1,553 = 55,560,128

This can also be written as 26 x 131 x 431 x 1,5531 = 55,560,128

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


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