A134916 Numbers n such that both 3^n+2 and 2^n+3 are primes.

1, 2, 3, 4, 15

Offset: 1

Author

Zak Seidov, Jan 29 2008

Keywords

• more
• nonn

Comments

Intersection of A057732 and A051783. a(6)>1000.

Since this is the intersection of A057732 and A051783, a(6)>95504. - Dmitry Kamenetsky, Jul 29 2008

Crossrefs

Cf. A051783, A057732.

Programs

Mathematica

Select[Range[20],AllTrue[{3^#+2,2^#+3},PrimeQ]&] (* Harvey P. Dale, Sep 02 2022 *)

PARI

for(n=0,1000,if(isprime(2^n+3)&&isprime(3^n+2),print(n)))