Q: What are the prime factors of the number 561,716,400?

 A: 2, 3, 5, 7, 41, 233

Why are those the prime factors of the number 561,716,400?

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 561,716,400

561,716,400
Factor Arrows
2280,858,200
Factor Arrows
2140,429,100
Factor Arrows
270,214,550
Factor Arrows
235,107,275
Factor Arrows
311,702,425
Factor Arrows
52,340,485
Factor Arrows
5468,097
Factor Arrows
766,871
Factor Arrows
79,553
Factor Arrows
41233

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, 5, 7, 41, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 7 x 7 x 41 x 233 = 561,716,400

This can also be written as 24 x 31 x 52 x 72 x 411 x 2331 = 561,716,400

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


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