Q: What are the prime factors of the number 54,878,824?

 A: 2, 7, 11, 13, 89

Why are those the prime factors of the number 54,878,824?

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 54,878,824

54,878,824
Factor Arrows
227,439,412
Factor Arrows
213,719,706
Factor Arrows
26,859,853
Factor Arrows
7979,979
Factor Arrows
7139,997
Factor Arrows
1112,727
Factor Arrows
111,157
Factor Arrows
1389

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, 7, 11, 13, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 11 x 11 x 13 x 89 = 54,878,824

This can also be written as 23 x 72 x 112 x 131 x 891 = 54,878,824

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


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