OFFSET
1,1
COMMENTS
No further terms found up to 163577833 in extended tables (see Buhler link). - Michel Marcus, Apr 17 2014
LINKS
Joe Buhler and David Harvey, Irregular primes to 163 million, 2009.
W. Johnson, Irregular primes and Cyclotomic Invariants, Math. Comp., 1975, Vol. 29, No. 129, pp. 113-120.
PROG
(PARI) is(n)=lift(Mod(numerator(bernfrac(n-9)), n)==0)
forprime(p=8, , if(is(p), print1(p, ", "))) \\ Felix Fröhlich, Jan 19 2015
CROSSREFS
KEYWORD
nonn,hard,bref,more
AUTHOR
Felix Fröhlich, May 21 2012
STATUS
approved