Dear Aspirant 

You don't have to worry if you forget your application number. There are various ways through which you can get your application number. 

• Visit ctet website for downloading admit card there you will found an option of forgot application number,click there and enter the required details and then you will receive email or message of your application number. 
• Check your email inbox, you would have received a message that your registration is complete along with application number. 
• Check your mobile inbox of phone number which you have entered while filling the form, where you would have received a message that your registration is complete. 

Good luck for your examination :) 

Feel free to ask if you have any further queries.