27239

Properties

Appears in sequences

• T(n,n+1), array T given by A047020.at n=9A047026
• {e^n}-th prime, where {e^n} is closest integer to e^n, A000227.at n=8A057219
• Safe primes (A005385) (p and (p-1)/2 are primes) such that 12*p+1 is also prime.at n=53A075707
• Numbers k such that (5^k - 3^k)/2 = A005059(k) is prime.at n=13A121877
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 16 : primes in A146339.at n=12A146361
• Primes p of the form a^2-b^2 and p*a-b is also prime (with b=prime and a=b+1).at n=19A173875
• Numbers m such that m, m-1, m-2 and m-3 are 1,2,3,4-almost primes respectively.at n=35A201220
• Primes of the form n^2 + 14.at n=8A243449
• Yarborough primes that remain Yarborough primes when each of their digits are replaced by their cubes.at n=39A296563
• a(n) is the first prime p such that the sum of 2*n consecutive primes starting at p is q*(q+1) where q is prime, or 0 if there is no such p.at n=39A338989
• Lesser of twin primes p such that p and p+2 are both in A115591.at n=25A367318
• a(n) = least prime greater than prime(n)*prime(n+1).at n=37A391804
• Prime numbersat n=2981