Find the last $3$ digits of $13^{1201}$.
9105
Finding the last two digits $123^{562}$
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?
35899
Simple logic problem: Finding largest and smallest number among 3 numbers
7473
How am I supposed to tell if a number is divisible by $13$ (I need a shortcut)?
65328
Counts and skips the numbers that have digits divisible by 3 (change in base method)
51826
Last digits number theory. $7^{9999}$?
70492
What is the shortest way to compute the last 3 digits of $17^{256}$?
72406
Last two digits of $2^{1000}$ via Chinese Remainder Theorem?
36182
Why doesn't the last digit method work for divisibility by 4?
142151
Find the last two digits of $9^{{9}^{9}}$
17766
Find $n^{th}$ term of $\frac23,\frac35,\frac58,\frac8{13}\dots$
29764
Find the largest of the three prime divisors of the number $13^4 + 16^5 - 172^2$
148535
Finding the "triangular root" of a number.
49967
Find the last two digits of $ 7^{81} ?$
143392
How to calculate the division and remainder of a big number manually
139173
To find last two digits of $2^{100}$
59135
What is the proof of divisibility by $13$?