Q: What are the prime factors of the number 711,636,678?

 A: 2, 3, 19, 8563

Why are those the prime factors of the number 711,636,678?

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 711,636,678

711,636,678
Factor Arrows
2355,818,339
Factor Arrows
3118,606,113
Factor Arrows
339,535,371
Factor Arrows
313,178,457
Factor Arrows
34,392,819
Factor Arrows
31,464,273
Factor Arrows
3488,091
Factor Arrows
3162,697
Factor Arrows
198,563

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, 19, 8563

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 19 x 8,563 = 711,636,678

This can also be written as 21 x 37 x 191 x 8,5631 = 711,636,678

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


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