Q: What are the prime factors of the number 73,228,779?

 A: 3, 13, 7727

Why are those the prime factors of the number 73,228,779?

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 73,228,779

73,228,779
Factor Arrows
324,409,593
Factor Arrows
38,136,531
Factor Arrows
32,712,177
Factor Arrows
3904,059
Factor Arrows
3301,353
Factor Arrows
3100,451
Factor Arrows
137,727

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:

3, 13, 7727

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 13 x 7,727 = 73,228,779

This can also be written as 36 x 131 x 7,7271 = 73,228,779

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


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