A064982 - OEIS

%I #2 Mar 30 2012 17:30:36

%S 15308,15572,22133,52499,98354,134150,135356,138422,142748,182606,

%T 223850,245111,278408,279260,322223,354608,385979,395114,404597,

%U 421070,472880,477068,491654,501092,523205,543071,549677,549989,566780,594575

%N n*10^7-1, n*10^7-3, n*10^7-7 and n*10^7-9 are all prime.

%t Select[ Range[10^6], PrimeQ[10^7# - 1] && PrimeQ[10^7# - 3] && PrimeQ[10^7# - 7] && PrimeQ[10^7# - 9] &]

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Oct 30 2001