OFFSET
1,1
COMMENTS
The prime factors of 2^3510-1 that are congruent to 1 modulo 1755 (the multiplicative order of 2 modulo 3511). - Max Alekseyev, Aug 30 2016
LINKS
PROG
(PARI) forprime(p=1, , if(Mod(2, 3511*p)^(3511*p-1)==1 || Mod(2, 3511*p^2)^(3511*p^2-1)==1, print1(p, ", ")))
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
Felix Fröhlich, May 23 2016
EXTENSIONS
Terms a(8) onward from Max Alekseyev, Aug 30 2016
STATUS
approved