Arduinoside

int button1 = 2;
int button2 = 3;
int button3 = 5;
int button4 = 7;
int button5 = 11;
int button6 = 13;
int buttoncheck = 8;
int LED = 4;
int LED2 = 9;

int buttonstate1 = 0;
int buttonstate2 = 0;
int buttonstate3 = 0;
int buttonstate4 = 0;
int buttonstate5 = 0;
int buttonstate6 = 0;
int buttonstatecheck = 0;
int value = 1;



void setup(){
  Serial.begin(9600);
pinMode(LED,OUTPUT);
pinMode(LED, OUTPUT);
pinMode(button1,INPUT);
pinMode(button2,INPUT);
pinMode(button3,INPUT);
pinMode(button4,INPUT);
pinMode(button5,INPUT);
pinMode(button6,INPUT);
pinMode(buttoncheck, INPUT);

 
   
}

void loop(){
  buttonstate1 = digitalRead(button1);
  buttonstate2 = digitalRead(button2);
  buttonstate3 = digitalRead(button3);
  buttonstate4 = digitalRead(button4);
  buttonstate5 = digitalRead(button5);
  buttonstate6 = digitalRead(button6);
  buttonstatecheck = digitalRead(buttoncheck);
 

  if (buttonstate1 == HIGH){
    delay(500);
   mult(2);   
  }

  else if (buttonstate2 == HIGH){
   delay(500);
     mult(3);
 
  }

   else if (buttonstate3 == HIGH){
    delay(500);
     mult(5);
     
  }

   else if (buttonstate4 == HIGH){
    delay(500);
      mult(7);
   
  }

   else if (buttonstate5 == HIGH){
    delay(500);
       mult(11);
    
   
  }

   else if (buttonstate6 == HIGH){
    delay(500);
       mult(13);
   
  }

 else if (buttonstatecheck == HIGH)
  {
    delay(500);
int   letter = valuecheck(value);
      
   

     if (letter == 109) {
      digitalWrite(LED, HIGH);
      delay(1000);
      digitalWrite(LED, LOW);
      value = 1;}

      value = 1;

    

   
    

}
}


int mult(int button){

  if (button == 1){
      int p = valuecheck(value);
      return p;
   }
  else if (button != 1) {
    
    value = value * button;
    return value;
    }
} 

int valuecheck(int ans)
{
    switch (ans){
      case 2:
        Serial.println("2");
        return 2;
        break;
        
      case 6:
        
        Serial.println("6");
        return 6;
        break;

      case 10:
        Serial.println("10");
        return 10;
        break;

      case 14:
        Serial.println("14");
        return 14;
        break;

      case 15:
        Serial.println("15");
        return 15;
        break;

      case 21:
        Serial.println("21");
        return 21;
        break;

      case 22:
        Serial.println("22");
        return 22;
        break;

      case 26:
        Serial.println("26");
        return 26;
        break;

      case 33:
        Serial.println("33");
        return 33;
        break;

      case 35:
        Serial.println("35");      
        return 35;
        break;

      case 39:
        Serial.println("39");
        return 39;
        break;

      case 42:
        Serial.println("42");
        return 42;
        break;

      case 66:
        Serial.println("66");
        return 66;
        break;

      case 70:
        Serial.println("70");
        return 70;
        break;

      case 77:
        Serial.println("77");
        return 77;
        break;

      case 78:
        Serial.println("78");
        return 78;
        break;

      case 105:
        Serial.println("105");
        return 105;
        break;

      case 110:
        Serial.println("110");
        return 110;
        break;

      case 130:
        Serial.println("130");
        return 130;
        break;

      case 154:
        Serial.println("154");
        return 154;
        break;

      case 165:
        Serial.println("165");
        return 165;
        break;

      case 182:
        Serial.println("182");
        return 182;
        break;

      case 195:
        Serial.println("195");
        return 195;
        break;

      case 210:
        Serial.println("210");
        return 210;
        break;

      case 231:
        Serial.println("231");
        return 231;
        break;

      case 286:
        Serial.println("286");
        return 286;
        break;

      case 310:
        Serial.println("310");
        return 310;
        break;

      case 385:
        Serial.println("385");
        return 385;
        break;

      case 390:
        Serial.println("390");
        return 390;
        break;

      case 429:
        Serial.println("429");
        return 429;
        break;

      case 462:
        Serial.println("462");
        return 462;
        break;

      case 546:
        Serial.println("546");
        return 546;
        break;

      case 770:
        Serial.println("770");
        return 770;
        break;

      case 910:
        Serial.println("910");
        return 910;
        break;

      case 1001:
        Serial.println("1001");
        return 1001;
        break;

      case 1155:
        Serial.println("1155");
        return 1155;
        break;

      case 1365:
        Serial.println("1365");
        return 1365;
        break;

      case 1430:
        Serial.println("1430");
        return 1430;
        break;

      case 2145:
        Serial.println("2145");
        return 2145;
        break;

      case 2310:
        Serial.println("2310");
        return 2310;
        break;

      case 3003:
        Serial.println("3003");
        return 3003;
        break;

      case 4290:
        Serial.println("4290");
        return 4290;
        break;

      case 6006:
        Serial.println("6006");
        return 6006;
        break;

      case 15015:
        Serial.println("15015");
        return 15015;
        break;

      case 30020:
        Serial.println("30020");
        return 30020;
        break;


      
      default:
        Serial.println("000");
        return 109;
        break;
      
      }
    
}