239850

Appears in sequences

• Integers y such that for some integer x we have uphi(x) = uphi(y) = x-y, where uphi(n) = A047994(n) is the unitary totient function: If n = Product p_i^e_i, uphi(n) = Product (p_i^e_i - 1).at n=24A067741
• Numbers k such that phi(m) = 96*k+2 has no solution.at n=18A071624