OFFSET
1,2
COMMENTS
LINKS
PROG
(PARI) a=0; for(n=1, 148, m=0; while(!ispseudoprime(n*2^m-1), m++); if(m>a, a=m; print1(n, ", ")));
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Arkadiusz Wesolowski, Apr 01 2014
STATUS
approved