2320690177

Appears in sequences

• Composite numbers k such that phi(k)*lambda(k) divides (k-1)^2, where phi(k) = A000010(k) and lambda(k) = A002322(k).at n=9A277366
• Numbers k such that lambda(k)^3 divides (k-1)^2, where lambda(k) = A002322(k).at n=7A277389
• Numbers k > 2 such that lambda(k)^2 divides k-1, where lambda(k) = A002322(k).at n=0A277720