Q: What are the prime factors of the number 68,663,646?

 A: 2, 3, 17, 74797

Why are those the prime factors of the number 68,663,646?

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 68,663,646

68,663,646
Factor Arrows
234,331,823
Factor Arrows
311,443,941
Factor Arrows
33,814,647
Factor Arrows
31,271,549
Factor Arrows
1774,797

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, 17, 74797

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 17 x 74,797 = 68,663,646

This can also be written as 21 x 33 x 171 x 74,7971 = 68,663,646

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


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