Q: What are the prime factors of the number 811,830,500?

 A: 2, 5, 13, 124897

Why are those the prime factors of the number 811,830,500?

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 811,830,500

811,830,500
Factor Arrows
2405,915,250
Factor Arrows
2202,957,625
Factor Arrows
540,591,525
Factor Arrows
58,118,305
Factor Arrows
51,623,661
Factor Arrows
13124,897

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, 13, 124897

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 13 x 124,897 = 811,830,500

This can also be written as 22 x 53 x 131 x 124,8971 = 811,830,500

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


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