Q: What are the prime factors of the number 103,235,561?

 A: 11, 13, 43, 103, 163

Why are those the prime factors of the number 103,235,561?

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 103,235,561

103,235,561
Factor Arrows
119,385,051
Factor Arrows
13721,927
Factor Arrows
4316,789
Factor Arrows
103163

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:

11, 13, 43, 103, 163

We can check our work by multiplying all of the prime factors together: 11 x 13 x 43 x 103 x 163 = 103,235,561

This can also be written as 111 x 131 x 431 x 1031 x 1631 = 103,235,561

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


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