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A152308
Primes p such that the multiplicative order of 2 modulo p is (p-1)/8.
2
73, 89, 233, 937, 1217, 1249, 1289, 1433, 1553, 1609, 1721, 1913, 2441, 2969, 3257, 3449, 4049, 4201, 4273, 4297, 4409, 4481, 4993, 5081, 5297, 5689, 6089, 6449, 6481, 6689, 6857, 7121, 7529, 7993, 8081, 8609, 8969, 9137, 9281, 9769, 10337, 10369
OFFSET
1,1
LINKS
PROG
(Magma) [ p: p in PrimesUpTo(10369) | r eq 1 and Order(R!2) eq q where q, r is Quotrem(p, 8) where R is ResidueClassRing(p) ];
(PARI) Vec(select(p->((p!=2) && (znorder(Mod(2, p)) == (p-1)/8)), primes(10000))) \\ Michel Marcus, Feb 09 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Klaus Brockhaus, Dec 02 2008
STATUS
approved