A376896 Wieferich prime to base 3/2: primes p such that p^2 divides 3^(p-1) - 2^(p-1).

23, 3842760169, 41975417117

Offset

1,1

Links

Table of n, a(n) for n=1..3.

Richard Fischer, Potenz-Differenz-Quotient (B+1)^(P-1)-B^(P-1) == 0 (mod P^2).

Wikipedia, Wieferich prime

Prog

(PARI) forprime(p=5, , if(Mod(3/2, p^2)^(p-1)==1, print1(p, ", ")))

Crossrefs

Cf. A001220 (Wieferich primes to base 2).

Sequence in context: A214360 A030464 A180731 * A053558 A140793 A023923

Adjacent sequences: A376893 A376894 A376895 * A376897 A376898 A376899

Keyword

nonn,bref,more,hard

Author

Jianing Song, Oct 18 2024

Status

approved