51517

Properties

Appears in sequences

• Primes that are palindromic in base 6.at n=35A029974
• 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 21.at n=17A031609
• "CGK" (necklace, element, unlabeled) transform of 2,1,1,1,...at n=31A032157
• Primes of the form 2*n^2+6*n+1.at n=26A176549
• Primes formed by concatenating k, k, and 7.at n=14A210513
• n-th prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n.at n=16A238663
• Smallest prime p such that p - floor(sqrt(p))^2 = n^2.at n=20A242991
• Primes having only {1, 5, 7} as digits.at n=41A260828
• Primes that are sums of a sequence of consecutive terms of A006094.at n=22A340537
• Prime numbersat n=5273