22807

Properties

Appears in sequences

• Largest prime == 7 (mod 8) with class number 2n+1.at n=18A002147
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 80 ones.at n=25A031848
• Primes of the form k^2+6.at n=15A056909
• Primes p such that x^36 = 2 has no solution mod p, but x^12 = 2 has a solution mod p.at n=30A059668
• Smallest prime larger than square of n-th prime.at n=35A062772
• Primes of the form p^2 + 6 where p is prime.at n=9A079141
• Balanced primes of order four.at n=25A082079
• Primes of the form floor(k*(k+1)*Pi/2), k>=0, where Pi = 3.1415.. = A000796.at n=15A163579
• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=2, k=1 and l=1.at n=8A176612
• Gullwing primes: primes in the gullwing sequence A187220.at n=35A187222
• Primes that are reached by an ever increasing aliquot sequence.at n=16A234842
• Least primes x that remain primes for n steps under the transform T(x) as defined in A243993.at n=3A244599
• One of the two successive approximations up to 2^n for 2-adic integer sqrt(17). This is the 3 (mod 4) case.at n=13A341539
• Primes that are partial sums of the semiprimes.at n=18A347366
• Discriminants of imaginary quadratic fields with class number 37 (negated).at n=20A351675
• Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] (1/2) * (1 / (exp(x) + exp(y) - exp(x+y))^2 - 1).at n=38A382740
• Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] (1/2) * (1 / (exp(x) + exp(y) - exp(x+y))^2 - 1).at n=42A382740
• Primes having only {0, 2, 7, 8} as digits.at n=34A386053
• Prime numbersat n=2548