error CS1525: error CS8025 text script doesnt work errors. Help!

I applied this script to a game object but there’s errors
2 errors I get are==
Assets/dart/opendoor.cs(53,1): error CS8025: Parsing error

Assets/dart/opendoor.cs(18,17): error CS1525: Unexpected symbol }‘, expecting ;’

using UnityEngine;
using System.Collections;

public class opendoor : MonoBehaviour {

	void Start ()
	{
		number = 0;
		codeLength = 5; //Count the number of characters in your code and that will be the code length (duh)
	}

	void Update ()
	{
		if (number == 0 && Input.GetKeyDown("3"))
		{
			number += 1
				//"number" now equals 1
		}

		if (number == 1 && Input.GetKeyDown("2"))
		{
			number += 1
				//"number" now equals 2
		}

		if (number == 2 && Input.GetKeyDown("h"))
		{
			number += 1
				//"number" now equals 3
		}

		if (number == 3 && Input.GetKeyDown("o"))
		{
			number += 1
				//"number" now equals 4
		}

		if (number == 4 && Input.GetKeyDown("t"))
		{
			number += 1
				//"number" now equals 5
		}

		if (number == codeLength)
			
		{
			//opendoor
		}


	}

using UnityEngine;
using System.Collections;

 public class opendoor : MonoBehaviour {
 
     void Start ()
     {
         number = 0;
         codeLength = 5; 
     }
 
     void Update ()
     {
         if (number == 0 && Input.GetKeyDown("3"))
         {
             number += 1;
                 //"number" now equals 1
         }
 
         if (number == 1 && Input.GetKeyDown("2"))
         {
             number += 1;
                 //"number" now equals 2
         }
 
         if (number == 2 && Input.GetKeyDown("h"))
         {
             number += 1;
                 //"number" now equals 3
         }
 
         if (number == 3 && Input.GetKeyDown("o"))
         {
             number += 1;
                 //"number" now equals 4
         }
 
         if (number == 4 && Input.GetKeyDown("t"))
         {
             number += 1;
                 //"number" now equals 5
         }
 
         if (number == codeLength)
             
         {
             //opendoor
         }
 
 
     }

}