Smallest base b > 1 such that both prime(n) and prime(n+1) are base-b Wieferich primes, i.e., p = prime(n) satisfies b^(p-1) == 1 (mod p^2) and q = prime(n+1) satisfies b^(q-1) == 1 (mod q^2).
A259075
Smallest base b > 1 such that both prime(n) and prime(n+1) are base-b Wieferich primes, i.e., p = prime(n) satisfies b^(p-1) == 1 (mod p^2) and q = prime(n+1) satisfies b^(q-1) == 1 (mod q^2).
Terms
- a(0) =17a(1) =26a(2) =18a(3) =148a(4) =239a(5) =249a(6) =423a(7) =28a(8) =63a(9) =374a(10) =117a(11) =787a(12) =2059a(13) =1085a(14) =655a(15) =4586a(16) =4153a(17) =3147a(18) =10056a(19) =4559a(20) =2092a(21) =18692a(22) =19487a(23) =3018a(24) =19343a(25) =14285a(26) =164a(27) =31469a(28) =6817a(29) =7916
External references
- oeis: A259075