173347

Properties

Appears in sequences

• Primes which are the concatenation of a Sophie Germain prime p and 2p+1.at n=4A168165
• Primes which are the concatenation of a prime p and 2p+1.at n=12A168166
• The least prime that has at least n embedded primes, reading forward and backward.at n=19A229908
• Primes which are the concatenation of two primes in exactly three ways.at n=21A238499
• a(n) = p(n)*p(n+1)*(p(n+1) - p(n)) + 1, where p(n) = prime(n).at n=38A383242
• Primes of the form p(k)*p(k+1)*(p(k+1) - p(k)) + 1 sorted by increasing k.at n=11A383244
• Prime numbersat n=15781