The evil Colonel Szplug and the Meltz have drugged and kidnapped Numberella, Ronnie and The Thief. As the Meltz spaceship ascends rapidly into the starry sky and the three friends get accustomed to their new surroundings, a familiar voice can be heard over the intercom:

"HAHAHA NUMBERELLA THIS TIME YOU WILL NOT ESCAPE ME! YOU AND YOUR FRIENDS HAVE COME HERE TO DIE. SIT BACK AND ENJOY THE RIDE! HAHAHA."

With Numberella and The Thief still groggy from the kidnapping, it's down to Ronnie to get them out of there. Suddenly, he notices a message hidden in the holding cell. It says: I AM DOUBLE AGENT G9. I CAN HELP YOU ESCAPE. SOLVE THE PUZZLES I HAVE LEFT YOU AND YOU WILL FIND A HOT STREAK 500 SPACE SHIP TO FLY BACK TO EARTH. BUT HURRY! IF THE MELTZ SEE THE MESSAGES, WE WILL ALL BE KILLED.

Ronnie looks worried. Puzzles aren't his strong suit and Numberella can barely stand upright. She murmurs, "Try the Agency Reserve Database. Someone may help."  He types rapidly on his holoscreen, and YOUR holoscreen bursts into action.  Ronnie's figure appears, and he says:

"I DON'T KNOW WHO YOU ARE BUT PLEASE HELP ME SOLVE THE PUZZLES AND ESCAPE FROM THE MELTZ SPACESHIP. THERE'S ONLY ONE WAY OFF AND THAT'S TO FIND THE HOT STREAK 500 - IT WILL GET US BACK TO EARTH. I CAN'T DO IT BY MYSELF. CAN YOU HELP?"                                                                    

Now his eyes are accustomed to the gloom, Ronnie notices that on the wall of their cell, etched into the DARK material are four numbers, and a question that reads: WHICH NUMBER IS NOT PRIME? Click on the correct choice below to enable Numberella and the gang to escape their cell.