231241

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 33.at n=24A031621
• First member of a prime 5-tuple in a 2p-1 progression.at n=16A057328
• Primes from merging of 6 successive digits in decimal expansion of the Champernowne Constant.at n=13A104949
• Primes starting a Cunningham chain of the second kind of length 5.at n=12A110022
• Smallest primes starting a complete four iterations Cunningham chain of the first or second kind.at n=21A110027
• Prime numbersat n=20536