68491

Properties

Appears in sequences

• Primes p such that there exist primes p'<p"<p"'<p""<p such that the concatenation of any two among the {p,...,p""} is prime.at n=22A139005
• a(n) = (2n+1)^(2n+1) mod 2^(2n+1).at n=9A178537
• Primes of the form (2n-1)^(2n-1) mod 2^(2n-1).at n=1A178966
• Primes containing nonprime digits (from 1 to 9) in their decimal expansion and whose digits are distinct, i.e., consisting of only digits 1, 4, 6, 8, 9.at n=29A323391
• Primes p such that p^2+q+r, p+q^2+r and p+q+r^2 are all prime, where q and r are the next two primes after p.at n=13A348353
• Prime numbersat n=6811