Q: What are the prime factors of the number 61,834,640?

 A: 2, 5, 7, 110419

Why are those the prime factors of the number 61,834,640?

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 61,834,640

61,834,640
Factor Arrows
230,917,320
Factor Arrows
215,458,660
Factor Arrows
27,729,330
Factor Arrows
23,864,665
Factor Arrows
5772,933
Factor Arrows
7110,419

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, 7, 110419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 110,419 = 61,834,640

This can also be written as 24 x 51 x 71 x 110,4191 = 61,834,640

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


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