How to compute the the last digit of $122^{122}$?
121122
Calculate $2^{5104} \bmod 10$ using mental arithmetic
111962
Do the last digits of powers of a number $n$ follow the same cycle as the last digits of the number $n$'s last digit's powers?
4475
Find the remainder when $2^{2016}$ is divided by $47$
107848
Finding the remainder of $\overbrace{11\ldots1}^{123 \text{ times}}$ divided by $271$
142135
A number with 6 distinct digits which get multiplied by 5 if we move the last digit to front
27249
How many digits does $2^{1000}$ contain?
2899
Calculating a SQRT digit-by-digit?
27538
Last Two Digits Problem
26614
Fermat: Last two digits of $7^{355}$
139173
To find last two digits of $2^{100}$
9105
Finding the last two digits $123^{562}$
63688
Find the highest order bit in C
7868
Computing limit of $(1+1/n)^{n^2}$
91565
How to efficiently compute $\,25^{37}\pmod{55}$?
103711
Finding the first digit of $2015^{2015}$
72406
Last two digits of $2^{1000}$ via Chinese Remainder Theorem?
157771
Nested exponent modulus, $2^{2^{517}} \pmod {23}$