20099940

Appears in sequences

• Numbers k such that k-1, k+1, 2*k-1, 2*k+1, 3*k-1 and 3*k+1 are primes.at n=20A118859
• Numbers k such that k - 37, k - 1, k + 1, k + 37 are consecutive primes.at n=20A268305