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A255204 Primes p for which exactly one base b with 1 < b < p exists such that p is a base b Wieferich prime. 8
29, 37, 43, 59, 79, 97, 103, 109, 113, 137, 151, 181, 191, 197, 199, 223, 233, 241, 257, 263, 281, 283, 293, 307, 373, 379, 397, 401, 419, 421, 433, 439, 449, 461, 499, 521, 523, 547, 557, 563, 577, 601, 617, 619, 641, 659, 661, 701, 727, 739, 743, 761, 769 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

p = prime(n) such that A242830(n) = 1.

LINKS

Table of n, a(n) for n=1..53.

PROG

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

CROSSREFS

Cf. A255203, A255205, A255206, A255207, A255208, A255209, A255210.

Sequence in context: A172195 A161724 A046502 * A049746 A097997 A177873

Adjacent sequences:  A255201 A255202 A255203 * A255205 A255206 A255207

KEYWORD

nonn

AUTHOR

Felix Fröhlich, Feb 17 2015

STATUS

approved

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Last modified November 19 03:35 EST 2019. Contains 329310 sequences. (Running on oeis4.)