211049

Properties

Appears in sequences

• Smaller of the first twin pair to yield a twin pair chain of length n.at n=2A068635
• Primes p such that p+2, p*(p+2) + 12 and p*(p+2) + 14 are also prime.at n=15A130736
• Lower primes p1 in a twin pair such that sum of p1 and p2 yields average a1 of twin prime pairs and product of 2*a1 is another average of twin prime pairs.at n=0A178421
• Lesser of twin happy primes.at n=27A387240
• Prime numbersat n=18894