Q: What are the prime factors of the number 8,078,742?

 A: 2, 3, 7, 97, 661

Why are those the prime factors of the number 8,078,742?

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 8,078,742

8,078,742
Factor Arrows
24,039,371
Factor Arrows
31,346,457
Factor Arrows
3448,819
Factor Arrows
764,117
Factor Arrows
97661

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, 97, 661

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 97 x 661 = 8,078,742

This can also be written as 21 x 32 x 71 x 971 x 6611 = 8,078,742

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


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