Q: What are the prime factors of the number 305,520,012?

 A: 2, 3, 7, 83, 541

Why are those the prime factors of the number 305,520,012?

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 305,520,012

305,520,012
Factor Arrows
2152,760,006
Factor Arrows
276,380,003
Factor Arrows
325,460,001
Factor Arrows
38,486,667
Factor Arrows
32,828,889
Factor Arrows
3942,963
Factor Arrows
3314,321
Factor Arrows
744,903
Factor Arrows
83541

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, 83, 541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 7 x 83 x 541 = 305,520,012

This can also be written as 22 x 35 x 71 x 831 x 5411 = 305,520,012

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


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