5246010

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=8A118859
• Least k such that x*k - 1 produces primes for x=1..n and composite for x=n+1.at n=6A202779