Q: What are the prime factors of the number 716,635,520?

 A: 2, 5, 523, 2141

Why are those the prime factors of the number 716,635,520?

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 716,635,520

716,635,520
Factor Arrows
2358,317,760
Factor Arrows
2179,158,880
Factor Arrows
289,579,440
Factor Arrows
244,789,720
Factor Arrows
222,394,860
Factor Arrows
211,197,430
Factor Arrows
25,598,715
Factor Arrows
51,119,743
Factor Arrows
5232,141

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, 5, 523, 2141

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 523 x 2,141 = 716,635,520

This can also be written as 27 x 51 x 5231 x 2,1411 = 716,635,520

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


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