I'm surprised this hasn't been done yet, but here we go.
Create a program which prints some number of 1s (ideally as large as possible) before halting.
The rules are simple:
Your program is bounded to 50 bytes in size.
Your output must only be a continuous row of 1s (plus trailing newline if it has to be added), without any breaks in the middle.
Your program must halt. No infinite loops.
Your program must not use STDIN or output to STDERR.
Your program must use STDOUT or closest equivalent.
Your score is the amount of 1s your program prints before halting.