Q: What are the prime factors of the number 820,485,248?

 A: 2, 11, 582731

Why are those the prime factors of the number 820,485,248?

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 820,485,248

820,485,248
Factor Arrows
2410,242,624
Factor Arrows
2205,121,312
Factor Arrows
2102,560,656
Factor Arrows
251,280,328
Factor Arrows
225,640,164
Factor Arrows
212,820,082
Factor Arrows
26,410,041
Factor Arrows
11582,731

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, 11, 582731

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 11 x 582,731 = 820,485,248

This can also be written as 27 x 111 x 582,7311 = 820,485,248

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


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