Q: What are the prime factors of the number 72,724,600?

 A: 2, 5, 13, 83, 337

Why are those the prime factors of the number 72,724,600?

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 72,724,600

72,724,600
Factor Arrows
236,362,300
Factor Arrows
218,181,150
Factor Arrows
29,090,575
Factor Arrows
51,818,115
Factor Arrows
5363,623
Factor Arrows
1327,971
Factor Arrows
83337

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, 5, 13, 83, 337

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 13 x 83 x 337 = 72,724,600

This can also be written as 23 x 52 x 131 x 831 x 3371 = 72,724,600

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


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