Q: What are the prime factors of the number 305,123,364?

 A: 2, 3, 7, 13, 93139

Why are those the prime factors of the number 305,123,364?

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 305,123,364

305,123,364
Factor Arrows
2152,561,682
Factor Arrows
276,280,841
Factor Arrows
325,426,947
Factor Arrows
38,475,649
Factor Arrows
71,210,807
Factor Arrows
1393,139

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, 13, 93139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 13 x 93,139 = 305,123,364

This can also be written as 22 x 32 x 71 x 131 x 93,1391 = 305,123,364

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


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