10 INPUT"[147]PRIMZAHLEN BIS";H:Z=3:T=INT(SQR(H)+1):W=(T-1)/2:G=T*T:DIMP%(G)
20 FORX=1TOW:FORY=Z*ZTOGSTEPZ*2:P%(Y)=1:NEXT:Z=Z+2:NEXT
30 PRINT2;:FORX=3TOHSTEP2:IFP%(X)=.THENPRINTX;
40 NEXT