Q: What are the prime factors of the number 323,213,120?

 A: 2, 5, 29, 1201

Why are those the prime factors of the number 323,213,120?

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 323,213,120

323,213,120
Factor Arrows
2161,606,560
Factor Arrows
280,803,280
Factor Arrows
240,401,640
Factor Arrows
220,200,820
Factor Arrows
210,100,410
Factor Arrows
25,050,205
Factor Arrows
51,010,041
Factor Arrows
2934,829
Factor Arrows
291,201

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, 29, 1201

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 29 x 29 x 1,201 = 323,213,120

This can also be written as 26 x 51 x 292 x 1,2011 = 323,213,120

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


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