Q: What are the prime factors of the number 67,181,744?

 A: 2, 7, 85691

Why are those the prime factors of the number 67,181,744?

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 67,181,744

67,181,744
Factor Arrows
233,590,872
Factor Arrows
216,795,436
Factor Arrows
28,397,718
Factor Arrows
24,198,859
Factor Arrows
7599,837
Factor Arrows
785,691

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, 7, 85691

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 85,691 = 67,181,744

This can also be written as 24 x 72 x 85,6911 = 67,181,744

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


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