int main()
{
int n,count,i;
shai();
while(scanf("%d",&n),n!=0)
{
count=0;
for(i=2;i<=n;i++)
if (a[i]) count++;
printf("%d\n",count);
}
return 0;
}
int main()
{
int s,i;
int n;
shai();
while(scanf("%d",&n)!=EOF)
{s=0;
for(i=2;i<=n/2;i++)
{
if (a[i]&&a[n-i]) s++;
}
printf("%d\n",s);
}
return 0;
}
int main()
{
int T,a,n,p,i,ans;
shai();
scanf("%d",&T);
while (T--)
{
scanf("%d%d",&a,&n);
p=phi[n];
ans=0;
for (i=1;i<=(int)sqrt(p);i++)
if (p%i==0)
{
if (ksm(a,i,n)==1)
ans=max(ans,i);
if (ksm(a,p/i,n)==1)
ans=max(ans,p/i);
}
printf("%d\n",ans);
}
return 0;
}