Prime p1 of the form a^b - c^d = p1, where a, b, c, d are primes and a + b + c + d = p2, where p2 (A164062) is also prime.
A164061
Prime p1 of the form a^b - c^d = p1, where a, b, c, d are primes and a + b + c + d = p2, where p2 (A164062) is also prime.
Terms
- a(0) =2a(1) =3a(2) =5a(3) =19a(4) =139a(5) =149a(6) =311a(7) =6827a(8) =7949a(9) =27743a(10) =29663a(11) =29759a(12) =31249a(13) =101281a(14) =124213a(15) =130729a(16) =135271a(17) =169691a(18) =177019a(19) =361967a(20) =508009a(21) =568439a(22) =815351
External references
- oeis: A164061