Let $n$ be the smallest composite number such that it can be written as the product of two positive integers that differ by 10.  How many distinct prime factors does $n$ have?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $n$ be the smallest composite number such that it can be written as the product of two positive integers that differ by 10.  How many distinct prime factors does $n$ have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
Let $n$ be the smallest composite number such that it can be written as the product of two positive integers that differ by 10.  How many distinct prime factors does $n$ have?
train