Q: What are the prime factors of the number 61,939,160?

 A: 2, 5, 17, 79, 1153

Why are those the prime factors of the number 61,939,160?

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 61,939,160

61,939,160
Factor Arrows
230,969,580
Factor Arrows
215,484,790
Factor Arrows
27,742,395
Factor Arrows
51,548,479
Factor Arrows
1791,087
Factor Arrows
791,153

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, 17, 79, 1153

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17 x 79 x 1,153 = 61,939,160

This can also be written as 23 x 51 x 171 x 791 x 1,1531 = 61,939,160

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


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