Let S be the set of all three-digit numbers formed by three consecutive digits in increasing order. What is the greatest common factor of all the three-digit numbers in S?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let S be the set of all three-digit numbers formed by three consecutive digits in increasing order. What is the greatest common factor of all the three-digit numbers in S?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
Let S be the set of all three-digit numbers formed by three consecutive digits in increasing order. What is the greatest common factor of all the three-digit numbers in S?
train