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n*M31 + 1 is prime, where M31 = 2^31 - 1.
0

%I #2 Mar 30 2012 17:30:27

%S 46,84,136,144,184,196,210,220,226,234,238,280,306,324,364,460,480,

%T 486,498,540,550,558,574,586,610,684,786,796,798,820,876,924,936,964,

%U 966,976,1018,1024,1060,1108,1144,1170,1174,1216,1230,1240,1246,1386,1470

%N n*M31 + 1 is prime, where M31 = 2^31 - 1.

%t Select[ Range[ 0, 5000, 2 ], PrimeQ[ #(2^31 - 1) + 1 ] & ]

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Sep 08 2000