Q: What are the prime factors of the number 818,180,100?

 A: 2, 3, 5, 909089

Why are those the prime factors of the number 818,180,100?

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 818,180,100

818,180,100
Factor Arrows
2409,090,050
Factor Arrows
2204,545,025
Factor Arrows
368,181,675
Factor Arrows
322,727,225
Factor Arrows
54,545,445
Factor Arrows
5909,089

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, 909089

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 909,089 = 818,180,100

This can also be written as 22 x 32 x 52 x 909,0891 = 818,180,100

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


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