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A105656
Numbers n such that p1=2n+3, p2=4n+5, p3=6n+7, p4=8n+9, p5=10n+11, p6=12n+13 and p7=14n+15 are all prime.
2
256409, 4112429, 11120339, 12231449, 13243229, 31435739, 46892264, 49798979, 69909839, 98237474, 125994749, 145989164, 171741989, 201038564, 205739414, 229298684, 232560509, 253539929, 259765694, 261519719, 292721519, 296504669
OFFSET
1,1
MATHEMATICA
apQ[n_]:=And@@PrimeQ[Table[n*i+i+1, {i, 2, 14, 2}]]; Select[Range[ 300000000], apQ] (* Harvey P. Dale, Jan 02 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Apr 16 2005
STATUS
approved