Q: What are the prime factors of the number 68,802,154?

 A: 2, 19, 23, 78721

Why are those the prime factors of the number 68,802,154?

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 68,802,154

68,802,154
Factor Arrows
234,401,077
Factor Arrows
191,810,583
Factor Arrows
2378,721

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, 19, 23, 78721

We can check our work by multiplying all of the prime factors together: 2 x 19 x 23 x 78,721 = 68,802,154

This can also be written as 21 x 191 x 231 x 78,7211 = 68,802,154

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


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