Q: What are the prime factors of the number 55,561,056?

 A: 2, 3, 449, 1289

Why are those the prime factors of the number 55,561,056?

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 55,561,056

55,561,056
Factor Arrows
227,780,528
Factor Arrows
213,890,264
Factor Arrows
26,945,132
Factor Arrows
23,472,566
Factor Arrows
21,736,283
Factor Arrows
3578,761
Factor Arrows
4491,289

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, 449, 1289

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 449 x 1,289 = 55,561,056

This can also be written as 25 x 31 x 4491 x 1,2891 = 55,561,056

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


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