4124466

Appears in sequences

• Numbers n such that prime(n) == -1 (mod n).at n=21A045924
• Numbers k that divide prime(k)+1 or prime(k)-1.at n=33A078931
• a(n) is the smallest number m such that prime(m) = n*m - 1, or 0 if no such m exists.at n=16A108511
• Numbers k such that floor(prime(k)/k) < floor(prime(k+1)/(k+1)).at n=32A308082