C :

#include<stdio.h>

int fun(int n){
	int r=1,i;
	for(i=2;i*i<=n;i++){
		if(n%i==0){
			r=0;
			break;
		}
	}
	if(n==1){
		r=0;
	}
	return r;
}
int tong(int n){
	int r=0,i;
	for(i=2;i*i<=n;i++){
		if(n%i==0&&fun(i)==1&&fun(n/i)==1){
			r=1;
			break;
		}
	}
	return r;
}

void main(){
	int n;
	scanf("%d",&n);

	if(tong(n)==1){
		printf("%s","It's a Tongtong number.");
	}else{
		printf("%s","It's not a Tongtong number.");
		}
}

C++ :

#include <iostream>
#include <cmath>
using namespace std;
bool sushu(int n){
	bool r=true;
	int i;
	for(i=2;i<=sqrt(n);i++){
		if(n%i==0){
			r=false;
			break;
		}
	}
	if(n<=1){
		r=false;
	}
	return r;
}
void chaifeng(int n){
	int i;
	for(i=2;i<=n/2;i++){
		if(n%i==0){
			if(sushu(i)==true&&sushu(n/i)==true){ 
			cout<<"It's a Tongtong number."<<endl;	
			break;
		}else {
			cout<<"It's not a Tongtong number."<<endl;
			break;
			
		}
}
	}
}
int main(){
	int n;
	cin>>n;
	chaifeng(n);
}

Python :

import math
def suShu(n):
    f = True
    for i in range (2, int(math.sqrt(n))+1):
        if n % i == 0:
            f = False; 
    return f and n != 1
    
n = int(input())
f = False;
for a in range(2,int(math.sqrt(n))+1):
        for b in range (int(math.sqrt(n))+1, n ):
                if n == a * b and suShu(a) and suShu(b):
                    f = True;
if f:
     print("It's a Tongtong number.")
else:
     print("It's not a Tongtong number.")