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◇◇◇ Story ◇◇◇
"You, you like prime numbers?"
A story began from a place where such a voice was spoken from a mysterious beauty girl after school for a day.
Yes, This is a story of love and adventure about prime numbers.
I will definitely remember the joy of meeting new prime numbers.

◇◇◇ Feature ◇◇◇
Whole prime numbers industry shock!?
Let's enjoy finding prime numbers with Motoco-san who likes prime numbers.
This is a quiz game that just to judge whether the numerical question to be given from girls is prime numbers or not.
Answer the quiz correctly and fill out the prime number list.
When a prime number in the prime number list is given to the quiz, it will be displayed as a hint, so you can advance the game to your advantage.
Something good happens when it becomes possible to judge a lot of prime numbers!?
Does it make you misunderstood with harsh words if you answer wrong?