Q: What are the prime factors of the number 110,378,125?

 A: 5, 11, 13, 19

Why are those the prime factors of the number 110,378,125?

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 110,378,125

110,378,125
Factor Arrows
522,075,625
Factor Arrows
54,415,125
Factor Arrows
5883,025
Factor Arrows
5176,605
Factor Arrows
535,321
Factor Arrows
113,211
Factor Arrows
13247
Factor Arrows
1319

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:

5, 11, 13, 19

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 5 x 5 x 11 x 13 x 13 x 19 = 110,378,125

This can also be written as 55 x 111 x 132 x 191 = 110,378,125

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


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