What is the greatest common divisor of $2^{1998}-1$ and $2^{1989}-1$?
Question:
What is the greatest common divisor of $2^{1998}-1$ and $2^{1989}-1$?
Answer:
Let's think step by step.

user
511
What is the greatest common divisor of $2^{1998}-1$ and $2^{1989}-1$?
train