Q: What are the prime factors of the number 203,303,100?

 A: 2, 3, 5, 7, 11, 13, 677

Why are those the prime factors of the number 203,303,100?

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 203,303,100

203,303,100
Factor Arrows
2101,651,550
Factor Arrows
250,825,775
Factor Arrows
316,941,925
Factor Arrows
53,388,385
Factor Arrows
5677,677
Factor Arrows
796,811
Factor Arrows
118,801
Factor Arrows
13677

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, 11, 13, 677

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 7 x 11 x 13 x 677 = 203,303,100

This can also be written as 22 x 31 x 52 x 71 x 111 x 131 x 6771 = 203,303,100

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


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