#include<bits/stdc++.h>
using namespace std;
int ss(int n){
	if(n<2){
		return 0;
	}else{
		for(int i=2;i<=sqrt(n);i++){
			if(n%i==0){
				return 0;
			}
		}
		return 1;
	}
}
int main()
{
	int n,m,i,j,a[50][50],s=0;
	cin>>n>>m;
	for(i=1;i<=n;i++){
		for(j=1;j<=m;j++){
			cin>>a[i][j]; 
		}
	}
	for(i=1;i<=n;i++){
		for(j=1;j<=m;j++){
			if(ss(a[i][j])&&!ss(a[i+1][j])&&!ss(a[i-1][j])&&!ss(a[i][j+1])&&!ss(a[i][j-1])&&!ss(a[i+1][j+1])&&!ss(a[i+1][j-1])&&!ss(a[i-1][j+1])&&!ss(a[i-1][j-1])){
				s++;	
			}
		}
	}
	cout<<s;
	return 0;
}

/**************************************************************
	Problem: 1997
	User: zzz
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2076 kb
****************************************************************/