Q: What are the prime factors of the number 73,248?

 A: 2, 3, 7, 109

Why are those the prime factors of the number 73,248?

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 73,248

73,248
Factor Arrows
236,624
Factor Arrows
218,312
Factor Arrows
29,156
Factor Arrows
24,578
Factor Arrows
22,289
Factor Arrows
3763
Factor Arrows
7109

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, 7, 109

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 7 x 109 = 73,248

This can also be written as 25 x 31 x 71 x 1091 = 73,248

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


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