New posts in Nt.Number Theory

Is $\arcsin(1/4) / \pi$ irrational?

Is the number of solutions of $\phi(x)=n!$ bounded? If yes, what is its bound?

A generalization of strong primes

Q-curves and twisting

Abundancy index and non-solvable finite groups

Simultaneous similarity of matrices over finite fields

A variant on Wieferich primes

A modern reference to the Zsigmondy Theorem

Seeking a combinatorial proof for a binomial identity

What is the significance of Friedlander-Iwaniec and related theorems?