Q: What are the prime factors of the number 2,481,248?

 A: 2, 7, 11, 19, 53

Why are those the prime factors of the number 2,481,248?

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 2,481,248

2,481,248
Factor Arrows
21,240,624
Factor Arrows
2620,312
Factor Arrows
2310,156
Factor Arrows
2155,078
Factor Arrows
277,539
Factor Arrows
711,077
Factor Arrows
111,007
Factor Arrows
1953

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, 19, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 19 x 53 = 2,481,248

This can also be written as 25 x 71 x 111 x 191 x 531 = 2,481,248

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


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