New posts in number-theory

modulus in number theory

number-theory modular-arithmetic

Integer solutions of $x^3+y^3=z^3$ using methods of Algebraic Number Theory

number-theory algebraic-number-theory diophantine-equations

Calculate the number of integers in a given interval that are coprime to a given integer

probability number-theory algorithms prime-numbers zeta-functions

Are the squarefree numbers periodic?

Structures in the plot of the "squareness" of numbers

number-theory prime-factorization square-numbers

Asymptotic quality of rational approximations to $\pi$

number-theory asymptotics approximation pi diophantine-approximation

A few conjectured limits of products involving the Thue–Morse sequence

sequences-and-series number-theory limits products conjectures

A difficult Diophantine equation

number-theory diophantine-equations

Can $4\cdot n!-4n+1$ be a perfect square when $n>4$?

number-theory diophantine-equations

Is there a perfect square (other than 9) all of whose digits are 7, 8, or 9?

Total number of divisors of factorial of a number

algebra-precalculus number-theory elementary-number-theory factorial prime-factorization

a formula involving order of Dirichlet characters, $\mu(n)$ and $\varphi(n)$

number-theory analytic-number-theory characters arithmetic-functions

What are some natural arithmetical statements independent of ZFC?

number-theory set-theory meta-math

Primes for which $x^k\equiv n\pmod p$ is solvable: the fixed version

number-theory prime-numbers modular-arithmetic

Sum of squares of sum of squares function $r_2(n)$

number-theory analytic-number-theory

Link between the negative pell equation $x^2-dy^2=-1$ and a certain continued fraction

number-theory diophantine-equations continued-fractions pell-type-equations

Diophantine equation $x^y-y^x=11$

number-theory reference-request elementary-number-theory diophantine-equations

optimality of 2 as a coefficient in a continued fraction theorem

number-theory continued-fractions

proving that $ab$ is a perfect square.

When is Euler's totient function for two different integers equal?

number-theory elementary-number-theory reference-request prime-factorization