Q: What are the prime factors of the number 79,291,212?

 A: 2, 3, 7, 11, 13, 23, 41

Why are those the prime factors of the number 79,291,212?

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 79,291,212

79,291,212
Factor Arrows
239,645,606
Factor Arrows
219,822,803
Factor Arrows
36,607,601
Factor Arrows
7943,943
Factor Arrows
7134,849
Factor Arrows
1112,259
Factor Arrows
13943
Factor Arrows
2341

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, 11, 13, 23, 41

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 11 x 13 x 23 x 41 = 79,291,212

This can also be written as 22 x 31 x 72 x 111 x 131 x 231 x 411 = 79,291,212

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


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