# include<stdio.h>
int main()
{    int count,i,k,m,n,j;   
printf("Input m:");   
scanf("%d",&m);
printf("Input n:");   
scanf("%d",&n);
if(m==1)        
    m++;   
count=0;   
for(i=m;i<=n;i++)
{    k=i/2;        
for(j=2;j<=k;j++)            
    if(i%j==0)               
        break;        
    if(j>k)            
        printf("%4d",i);        
    count++;        
    if(count%6==0)            
        printf("\n");    }   
return 0;}