How to get MIN and MAX of Consecutive Numbers

Now here is a tricky one
I have a table with the following numbers:
A1 B1
10 4115
10 4116
10 4117
10 4118
11 4125
11 4126
11 4127
15 4150
15 4151
15 4152
15 4153

I need to have an output as shown below:
C1 D1 E1
10 4115 4118
11 4125 4127
15 4150 4153

So basically, I need to group these numbers if they are consecutive and then get MIN and MAX for that set of numbers.