Q: What are the prime factors of the number 550,406,240?

 A: 2, 5, 31, 110969

Why are those the prime factors of the number 550,406,240?

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 550,406,240

550,406,240
Factor Arrows
2275,203,120
Factor Arrows
2137,601,560
Factor Arrows
268,800,780
Factor Arrows
234,400,390
Factor Arrows
217,200,195
Factor Arrows
53,440,039
Factor Arrows
31110,969

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, 31, 110969

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 31 x 110,969 = 550,406,240

This can also be written as 25 x 51 x 311 x 110,9691 = 550,406,240

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


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