61381

Properties

Appears in sequences

• First member of a prime quadruple in a 2p-1 progression.at n=27A057327
• Smallest primes starting a complete three iterations Cunningham chain of the second kind.at n=17A110024
• Noncomposite numbers in the northern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.at n=22A168023
• Number of hypoplactic classes of 5-parking functions of length n.at n=5A243677
• Indices of 10-gonal numbers (A001107) that are also centered 10-gonal numbers (A062786).at n=4A280070
• Prime numbersat n=6176