67211

Properties

Appears in sequences

• Prime quadruples: numbers k such that k, k+2, k+6, k+8 are all prime.at n=28A007530
• Primes at which the difference pattern X,2,4,2,Y (X and Y >= 6) occurs in A001223.at n=14A052165
• Noncomposite numbers in the eastern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.at n=31A168022
• Primes p of a quadruplet (p,p+2,p+6,p+8) such that (p+(p+2)+(p+6)+(p+8))/60 is a prime.at n=4A177032
• Numbers n such that (7^n + 4^n)/11 is prime.at n=10A218373
• Lesser of twin primes for which phi(p-1) < phi(p+1).at n=16A286715
• Prime numbersat n=6696