Find the remainder when r^13 + 1 is divided by r - 1.
The remainder when r^13 + 1 is divided by r - 1 is 2, since evaluating the polynomial at r=1 gives a remainder of 2 by the Remainder Theorem.
Complete the following task based on the instruction and optional input provided.### Instruction:
Find the remainder when r^13 + 1 is divided by r - 1.

### Output:
The remainder when r^13 + 1 is divided by r - 1 is 2, since evaluating the polynomial at r=1 gives a remainder of 2 by the Remainder Theorem.