New posts in congruences

Divisibility rules and congruences

number-theory elementary-number-theory divisibility congruences

Uniqueness of $k$th root mod $m$ if $(k, \phi(m)) = 1$.

number-theory elementary-number-theory proof-verification modular-arithmetic congruences

Show that if $a \equiv b \pmod n$, $\gcd(a,n)=\gcd(b,n)$ [duplicate]

elementary-number-theory congruences gcd-and-lcm

Show that for any prime $ p $, there are integers $ x $ and $ y $ such that $ p|(x^{2} + y^{2} + 1) $.

number-theory elementary-number-theory congruences quadratic-residues

How many solutions of $\mod 63$ : $x^2=1 \pmod7 $ and $x^3=1\pmod 9$ [closed]

modules congruences

How to prove that $n^7\equiv n^3\mod40,\forall n\in\mathbb{Z}$

elementary-number-theory congruences

Mathematicians shocked(?) to find pattern in prime numbers

number-theory prime-numbers modular-arithmetic congruences random

How to solve these two simultaneous "divisibilities" : $n+1\mid m^2+1$ and $m+1\mid n^2+1$

number-theory elementary-number-theory divisibility diophantine-equations congruences

When a congruence system can be solved?

elementary-number-theory systems-of-equations congruences

Why is $a^n - b^n$ divisible by $a-b$?

elementary-number-theory modular-arithmetic induction divisibility congruences