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

1,1

Comments

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

Links

Table of n, a(n) for n=1..56.

Prog

(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, ", ")))

Crossrefs

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

Sequence in context: A052015 A042992 A344621 * A356445 A233577 A233041

Adjacent sequences: A255200 A255201 A255202 * A255204 A255205 A255206

Keyword

nonn

Author

Felix Fröhlich, Feb 17 2015

Status

approved