Q: What are the prime factors of the number 67,705,760?

 A: 2, 5, 41, 10321

Why are those the prime factors of the number 67,705,760?

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 67,705,760

67,705,760
Factor Arrows
233,852,880
Factor Arrows
216,926,440
Factor Arrows
28,463,220
Factor Arrows
24,231,610
Factor Arrows
22,115,805
Factor Arrows
5423,161
Factor Arrows
4110,321

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, 41, 10321

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 41 x 10,321 = 67,705,760

This can also be written as 25 x 51 x 411 x 10,3211 = 67,705,760

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


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