Q: What are the prime factors of the number 61,812,608?

 A: 2, 11, 13, 307

Why are those the prime factors of the number 61,812,608?

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 61,812,608

61,812,608
Factor Arrows
230,906,304
Factor Arrows
215,453,152
Factor Arrows
27,726,576
Factor Arrows
23,863,288
Factor Arrows
21,931,644
Factor Arrows
2965,822
Factor Arrows
2482,911
Factor Arrows
1143,901
Factor Arrows
113,991
Factor Arrows
13307

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, 11, 13, 307

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 2 x 11 x 11 x 13 x 307 = 61,812,608

This can also be written as 27 x 112 x 131 x 3071 = 61,812,608

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


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