Q: What are the prime factors of the number 68,151,384?

 A: 2, 3, 7, 135221

Why are those the prime factors of the number 68,151,384?

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 68,151,384

68,151,384
Factor Arrows
234,075,692
Factor Arrows
217,037,846
Factor Arrows
28,518,923
Factor Arrows
32,839,641
Factor Arrows
3946,547
Factor Arrows
7135,221

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, 3, 7, 135221

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 135,221 = 68,151,384

This can also be written as 23 x 32 x 71 x 135,2211 = 68,151,384

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


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