A fast (and correct) way of finding a common divisor for $1805$, $1991$, $2146$ so that they have the same remainder
115264
Find when three numbers have the same remainder when divided by the same number
22029
Solving modular arithmetic questions
16382
Find $a$ such that $(x+a)(x+1991)+1=(x+b)(x+c)$ with $a,b,c\in\Bbb Z$
30045
Solving linear congruences by hand: modular fractions and inverses
31555
Divisor of $m$ and $n$ divides $m - qn$ (in proof of Euclidean algorithm)
95033
Find the remainder of a number with a large exponent
116970
On the number divisors of a number
124295
Divison and remainder in Prolog
80908
Algorithm to calculate the number of divisors of a given number
145617
Is there any simple trick to solve the congruence $a^{24}\equiv6a+2\pmod{13}$?
107008
Find the remainder when $45!$ is divided by $47$?
95533
I need some help with a GCD and LCM's Problem
108035
solving diophantine equations using congruences
119433
How to find modulo of large numbers like $9801\! \pmod {\!32}$
107349
Working with elementary type proofs of divisor functions
14658
Deriving Chinese Remainder Theorem from gcd Bezout identity
19164
On the GCD of a Pair of Fermat Numbers