251742

Appears in sequences

• Numbers n such that prime(n) == -1 (mod n).at n=16A045924
• Numbers k that divide the average of prime(k-1) and prime(k+1).at n=10A066828
• Numbers k that divide prime(k)+1 or prime(k)-1.at n=27A078931
• Numbers k such that prime(k+1) == 5 (mod k).at n=18A105329
• Integers n such that prime(n-1) + prime(n+1) is a multiple of n.at n=15A260989