What is the scariest prime number?

I'm curious, what do you mean by the 'scariest prime number'? Is there a specific mathematical property or context that makes a certain prime number more daunting or intimidating than others? Or is this a playful question meant to evoke a sense of wonder and mystery around the realm of prime numbers? I'm intrigued to know what criteria you're using to determine the 'scariest' prime number and how it differs from other primes in the vast landscape of mathematics.