A255203 Primes p for which no bases b with 1 < b < p exist such that p is a base b Wieferich prime.

2, 3, 5, 7, 13, 17, 19, 23, 31, 41, 47, 53, 61, 67, 73, 83, 89, 101, 107, 139, 149, 157, 167, 173, 179, 193, 227, 239, 251, 271, 277, 311, 317, 337, 383, 389, 409, 431, 443, 457, 467, 479, 491, 503, 541, 569, 587, 593, 613, 643, 677, 683, 691, 709, 719, 733

Offset: 1

Author

Felix Fröhlich, Feb 17 2015

Keywords

• nonn

Comments

p = prime(n) such that A242830(n) = 0.

Crossrefs

Cf. A255204, A255205, A255206, A255207, A255208, A255209, A255210.

Programs

PARI

forprime(p=1, , b=2; i=0; while(b < p, if(Mod(b, p^2)^(p-1)==1, i++); b++); if(i==0, print1(p, ", ")))