New posts in Congruences

Solution to exponential congruence

Is $every$ prime factor of $\frac{n^{163}-1}{n-1}$ either $163$ or $1\;\text{mod}\;163$?

Mathematicians shocked(?) to find pattern in prime numbers

Identity involving pentagonal numbers

Number of solutions for $x^2 \equiv x \pmod m$

Find the remainder when ${{5^5}^5}^5$ is divided by $24$

Finding the solution of the congruence $4x\equiv16\pmod{26}$

What will be the remainder when $2^{31}$ is divided by $5$?

Divisibility by 7.

Show $a^p \equiv b^p \mod p^2$