86269

Properties

Appears in sequences

• Primes prime(k) such that prime(k)*k falls between twin primes.at n=32A080174
• G.f.: Sum_{n>=0} Product_{k=1..n} Series_Reversion( x*(1 - x^k) ).at n=12A206289
• Primes without "3" as a digit that remain prime when any single digit is replaced with "3".at n=21A224320
• Least primes x that remain primes for n steps under the transform T(x) as defined in A243993.at n=4A244599
• Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.at n=40A341083
• Value of prime number D for incrementally largest values of minimal y satisfying the equation x^2 - D*y^2 = -5.at n=39A341085
• a(1) = a(2) = 1; a(n) = gcd(a(n-1), a(n-2)) + (a(n-1) + a(n-2))/gcd(a(n-1), a(n-2)).at n=45A355898
• Prime numbersat n=8388