Q: What are the prime factors of the number 103,732,772?

 A: 2, 11, 13, 151, 1201

Why are those the prime factors of the number 103,732,772?

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 103,732,772

103,732,772
Factor Arrows
251,866,386
Factor Arrows
225,933,193
Factor Arrows
112,357,563
Factor Arrows
13181,351
Factor Arrows
1511,201

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, 11, 13, 151, 1201

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 13 x 151 x 1,201 = 103,732,772

This can also be written as 22 x 111 x 131 x 1511 x 1,2011 = 103,732,772

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


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