A325886 Bases b where exactly ten primes p with p < b exist such that p is a base-b Wieferich prime.

13834, 73837, 151325, 172324, 182973, 213615, 233009, 275786, 283877, 296449

Offset: 1

Author

Felix Fröhlich, May 26 2019

Keywords

• nonn
• more

Comments

Numbers n such that A255920(n) = 10.

Crossrefs

Cf. A255920.

Cf. bases b with exactly k base-b Wieferich primes less than b: A255921 (k=0), A255922 (k=1), A255923 (k=2), A255924 (k=3), A255925 (k=4), A325881 (k=5), A325882 (k=6), A325883 (k=7), A325884 (k=8), A325885 (k=9).

Programs

PARI

is(n) = my(i=0); forprime(p=1, n-1, if(Mod(n, p^2)^(p-1)==1, i++)); i==10